stm32/boards: Add alternate function list for STM32F446RE.

Signed-off-by: Damien George <damien@micropython.org>

ports/stm32/boards/NUCLEO_F446RE/mpconfigboard.mk

 MCU_SERIES = f4
 CMSIS_MCU = STM32F446xx
-AF_FILE = boards/stm32f429_af.csv
+AF_FILE = boards/stm32f446_af.csv
 LD_FILES = boards/stm32f411.ld boards/common_ifs.ld
 TEXT0_ADDR = 0x08000000
 TEXT1_ADDR = 0x08020000

ports/stm32/boards/stm32f446_af.csv

+Port,,AF0,AF1,AF2,AF3,AF4,AF5,AF6,AF7,AF8,AF9,AF10,AF11,AF12,AF13,AF14,AF15,
+,,SYS,TIM1/2,TIM3/4/5,TIM8/9/10/11/CEC,I2C1/2/3/4/CEC,SPI1/2/3/4,SPI2/3/4/SAI1,SPI2/3/USART1/2/3/UART5/SPDIFRX,SAI/USART6/UART4/5/SPDIFRX,CAN1/2/TIM12/13/14/QUADSPI,SAI2/QUADSPI/OTG2_HS/OTG1_FS,OTG1_FS,FMC/SDIO/OTG2_FS,DCMI,,SYS,
+PortA,PA0,,TIM2_CH1/TIM2_ETR,TIM5_CH1,TIM8_ETR,,,,USART2_CTS,UART4_TX,,,,,,,EVENTOUT,ADC123_IN0
+PortA,PA1,,TIM2_CH2,TIM5_CH2,,,,,USART2_RTS,UART4_RX,QUADSPI_BK1_IO3,SAI2_MCLK_B,,,,,EVENTOUT,ADC123_IN1
+PortA,PA2,,TIM2_CH3,TIM5_CH3,TIM9_CH1,,,,USART2_TX,SAI2_SCK_B,,,,,,,EVENTOUT,ADC123_IN2
+PortA,PA3,,TIM2_CH4,TIM5_CH4,TIM9_CH2,,,SAI1_FS_A,USART2_RX,,,OTG_HS_ULPI_D0,,,,,EVENTOUT,ADC123_IN3
+PortA,PA4,,,,,,SPI1_NSS/I2S1_WS,SPI3_NSS/I2S3_WS,USART2_CK,,,,,OTG_HS_SOF,DCMI_HSYNC,,EVENTOUT,ADC12_IN4
+PortA,PA5,,TIM2_CH1/TIM2_ETR,,TIM8_CH1N,,SPI1_SCK/I2S1_CK,,,,,OTG_HS_ULPI_CK,,,,,EVENTOUT,ADC12_IN5
+PortA,PA6,,TIM1_BKIN,TIM3_CH1,TIM8_BKIN,,SPI1_MISO,I2S2_MCK,,,TIM13_CH1,,,,DCMI_PIXCLK,,EVENTOUT,ADC12_IN6
+PortA,PA7,,TIM1_CH1N,TIM3_CH2,TIM8_CH1N,,SPI1_MOSI/I2S1_SD,,,,TIM14_CH1,,,FMC_SDNWE,,,EVENTOUT,ADC12_IN7
+PortA,PA8,MCO1,TIM1_CH1,,,I2C3_SCL,,,USART1_CK,,,OTG_FS_SOF,,,,,EVENTOUT,
+PortA,PA9,,TIM1_CH2,,,I2C3_SMBA,SPI2_SCK/I2S2_CK,SAI1_SD_B,USART1_TX,,,,,,DCMI_D0,,EVENTOUT,
+PortA,PA10,,TIM1_CH3,,,,,,USART1_RX,,,OTG_FS_ID,,,DCMI_D1,,EVENTOUT,
+PortA,PA11,,TIM1_CH4,,,,,,USART1_CTS,,CAN1_RX,OTG_FS_DM,,,,,EVENTOUT,
+PortA,PA12,,TIM1_ETR,,,,,,USART1_RTS,SAI2_FS_B,CAN1_TX,OTG_FS_DP,,,,,EVENTOUT,
+PortA,PA13,JTMS/SWDIO,,,,,,,,,,,,,,,EVENTOUT,
+PortA,PA14,JTCK/SWCLK,,,,,,,,,,,,,,,EVENTOUT,
+PortA,PA15,JTDI,TIM2_CH1/TIM2_ETR,,,HDMI_CEC,SPI1_NSS/I2S1_WS,SPI3_NSS/I2S3_WS,,UART4_RTS,,,,,,,EVENTOUT,
+PortB,PB0,,TIM1_CH2N,TIM3_CH3,TIM8_CH2N,,,,SPI3_MOSI/I2S3_SD,UART4_CTS,,OTG_HS_ULPI_D1,,SDIO_D1,,,EVENTOUT,ADC12_IN8
+PortB,PB1,,TIM1_CH3N,TIM3_CH4,TIM8_CH3N,,,,,,,OTG_HS_ULPI_D2,,SDIO_D2,,,EVENTOUT,ADC12_IN9
+PortB,PB2,,TIM2_CH4,,,,,SAI1_SD_A,SPI3_MOSI/I2S3_SD,,QUADSPI_CLK,OTG_HS_ULPI_D4,,SDIO_CK,,,EVENTOUT,
+PortB,PB3,JTDO/TRACESWO,TIM2_CH2,,,I2C2_SDA,SPI1_SCK/I2S1_CK,SPI3_SCK/I2S3_CK,,,,,,,,,EVENTOUT,
+PortB,PB4,NJTRST,,TIM3_CH1,,I2C3_SDA,SPI1_MISO,SPI3_MISO,SPI2_NSS/I2S2_WS,,,,,,,,EVENTOUT,
+PortB,PB5,,,TIM3_CH2,,I2C1_SMBA,SPI1_MOSI/I2S1_SD,SPI3_MOSI/I2S3_SD,,,CAN2_RX,OTG_HS_ULPI_D7,,FMC_SDCKE1,DCMI_D10,,EVENTOUT,
+PortB,PB6,,,TIM4_CH1,HDMI_CEC,I2C1_SCL,,,USART1_TX,,CAN2_TX,QUADSPI_BK1_NCS,,FMC_SDNE1,DCMI_D5,,EVENTOUT,
+PortB,PB7,,,TIM4_CH2,,I2C1_SDA,,,USART1_RX,SPDIF_RX0,,,,FMC_NL,DCMI_VSYNC,,EVENTOUT,
+PortB,PB8,,TIM2_CH1/TIM2_ETR,TIM4_CH3,TIM10_CH1,I2C1_SCL,,,,,CAN1_RX,,,SDIO_D4,DCMI_D6,,EVENTOUT,
+PortB,PB9,,TIM2_CH2,TIM4_CH4,TIM11_CH1,I2C1_SDA,SPI2_NSS/I2S2_WS,SAI1_FS_B,,,CAN1_TX,,,SDIO_D5,DCMI_D7,,EVENTOUT,
+PortB,PB10,,TIM2_CH3,,,I2C2_SCL,SPI2_SCK/I2S2_CK,SAI1_SCK_A,USART3_TX,,,OTG_HS_ULPI_D3,,,,,EVENTOUT,
+PortB,PB11,,TIM2_CH4,,,I2C2_SDA,,,USART3_RX,SAI2_SD_A,,,,,,,EVENTOUT,
+PortB,PB12,,TIM1_BKIN,,,I2C2_SMBA,SPI2_NSS/I2S2_WS,SAI1_SCK_B,USART3_CK,,CAN2_RX,OTG_HS_ULPI_D5,,OTG_HS_ID,,,EVENTOUT,
+PortB,PB13,,TIM1_CH1N,,,,SPI2_SCK/I2S2_CK,,USART3_CTS,,CAN2_TX,OTG_HS_ULPI_D6,,,,,EVENTOUT,
+PortB,PB14,,TIM1_CH2N,,TIM8_CH2N,,SPI2_MISO,,USART3_RTS,,TIM12_CH1,,,OTG_HS_DM,,,EVENTOUT,
+PortB,PB15,RTC_REFIN,TIM1_CH3N,,TIM8_CH3N,,SPI2_MOSI/I2S2_SD,,,,TIM12_CH2,,,OTG_HS_DP,,,EVENTOUT,
+PortC,PC0,,,,,,,SAI1_MCLK_B,,,,OTG_HS_ULPI_STP,,FMC_SDNWE,,,EVENTOUT,ADC123_IN10
+PortC,PC1,,,,,,SPI3_MOSI/I2S3_SD,SAI1_SD_A,SPI2_MOSI/I2S2_SD,,,,,,,,EVENTOUT,ADC123_IN11
+PortC,PC2,,,,,,SPI2_MISO,,,,,OTG_HS_ULPI_DIR,,FMC_SDNE0,,,EVENTOUT,ADC123_IN12
+PortC,PC3,,,,,,SPI2_MOSI/I2S2_SD,,,,,OTG_HS_ULPI_NXT,,FMC_SDCKE0,,,EVENTOUT,ADC123_IN13
+PortC,PC4,,,,,,I2S1_MCK,,,SPDIF_RX2,,,,FMC_SDNE0,,,EVENTOUT,ADC12_IN14
+PortC,PC5,,,,,,,,USART3_RX,SPDIF_RX3,,,,FMC_SDCKE0,,,EVENTOUT,ADC12_IN15
+PortC,PC6,,,TIM3_CH1,TIM8_CH1,FMPI2C1_SCL,I2S2_MCK,,,USART6_TX,,,,SDIO_D6,DCMI_D0,,EVENTOUT,
+PortC,PC7,,,TIM3_CH2,TIM8_CH2,FMPI2C1_SDA,SPI2_SCK/I2S2_CK,I2S3_MCK,SPDIF_RX1,USART6_RX,,,,SDIO_D7,DCMI_D1,,EVENTOUT,
+PortC,PC8,TRACED0,,TIM3_CH3,TIM8_CH3,,,,UART5_RTS,USART6_CK,,,,SDIO_D0,DCMI_D2,,EVENTOUT,
+PortC,PC9,MCO2,,TIM3_CH4,TIM8_CH4,I2C3_SDA,I2S_CKIN,,UART5_CTS,,QUADSPI_BK1_IO0,,,SDIO_D1,DCMI_D3,,EVENTOUT,
+PortC,PC10,,,,,,,SPI3_SCK/I2S3_CK,USART3_TX,UART4_TX,QUADSPI_BK1_IO1,,,SDIO_D2,DCMI_D8,,EVENTOUT,
+PortC,PC11,,,,,,,SPI3_MISO,USART3_RX,UART4_RX,QUADSPI_BK2_NCS,,,SDIO_D3,DCMI_D4,,EVENTOUT,
+PortC,PC12,,,,,I2C2_SDA,,SPI3_MOSI/I2S3_SD,USART3_CK,UART5_TX,,,,SDIO_CK,DCMI_D9,,EVENTOUT,
+PortC,PC13,,,,,,,,,,,,,,,,EVENTOUT,
+PortC,PC14,,,,,,,,,,,,,,,,EVENTOUT,
+PortC,PC15,,,,,,,,,,,,,,,,EVENTOUT,
+PortD,PD0,,,,,,SPI4_MISO,SPI3_MOSI/I2S3_SD,,,CAN1_RX,,,FMC_D2,,,EVENTOUT,
+PortD,PD1,,,,,,,,SPI2_NSS/I2S2_WS,,CAN1_TX,,,FMC_D3,,,EVENTOUT,
+PortD,PD2,,,TIM3_ETR,,,,,,UART5_RX,,,,SDIO_CMD,DCMI_D11,,EVENTOUT,
+PortD,PD3,TRACED1,,,,,SPI2_SCK/I2S2_CK,,USART2_CTS,,QUADSPI_CLK,,,FMC_CLK,DCMI_D5,,EVENTOUT,
+PortD,PD4,,,,,,,,USART2_RTS,,,,,FMC_NOE,,,EVENTOUT,
+PortD,PD5,,,,,,,,USART2_TX,,,,,FMC_NWE,,,EVENTOUT,
+PortD,PD6,,,,,,SPI3_MOSI/I2S3_SD,SAI1_SD_A,USART2_RX,,,,,FMC_NWAIT,DCMI_D10,,EVENTOUT,
+PortD,PD7,,,,,,,,USART2_CK,SPDIF_RX0,,,,FMC_NE1,,,EVENTOUT,
+PortD,PD8,,,,,,,,USART3_TX,SPDIF_RX1,,,,FMC_D13,,,EVENTOUT,
+PortD,PD9,,,,,,,,USART3_RX,,,,,FMC_D14,,,EVENTOUT,
+PortD,PD10,,,,,,,,USART3_CK,,,,,FMC_D15,,,EVENTOUT,
+PortD,PD11,,,,,FMPI2C1_SMBA,,,USART3_CTS,,QUADSPI_BK1_IO0,SAI2_SD_A,,FMC_A16,,,EVENTOUT,
+PortD,PD12,,,TIM4_CH1,,FMPI2C1_SCL,,,USART3_RTS,,QUADSPI_BK1_IO1,SAI2_FS_A,,FMC_A17,,,EVENTOUT,
+PortD,PD13,,,TIM4_CH2,,FMPI2C1_SDA,,,,,QUADSPI_BK1_IO3,SAI2_SCK_A,,FMC_A18,,,EVENTOUT,
+PortD,PD14,,,TIM4_CH3,,FMPI2C1_SCL,,,,SAI2_SCK_A,,,,FMC_D0,,,EVENTOUT,
+PortD,PD15,,,TIM4_CH4,,FMPI2C1_SDA,,,,,,,,FMC_D1,,,EVENTOUT,
+PortE,PE0,,,TIM4_ETR,,,,,,,,SAI2_MCLK_A,,FMC_NBL0,DCMI_D2,,EVENTOUT,
+PortE,PE1,,,,,,,,,,,,,FMC_NBL1,DCMI_D3,,EVENTOUT,
+PortE,PE2,TRACECLK,,,,,SPI4_SCK,SAI1_MCLK_A,,,QUADSPI_BK1_IO2,,,FMC_A23,,,EVENTOUT,
+PortE,PE3,TRACED0,,,,,,SAI1_SD_B,,,,,,FMC_A19,,,EVENTOUT,
+PortE,PE4,TRACED1,,,,,SPI4_NSS,SAI1_FS_A,,,,,,FMC_A20,DCMI_D4,,EVENTOUT,
+PortE,PE5,TRACED2,,,TIM9_CH1,,SPI4_MISO,SAI1_SCK_A,,,,,,FMC_A21,DCMI_D6,,EVENTOUT,
+PortE,PE6,TRACED3,,,TIM9_CH2,,SPI4_MOSI,SAI1_SD_A,,,,,,FMC_A22,DCMI_D7,,EVENTOUT,
+PortE,PE7,,TIM1_ETR,,,,,,,UART5_RX,,QUADSPI_BK2_IO0,,FMC_D4,,,EVENTOUT,
+PortE,PE8,,TIM1_CH1N,,,,,,,UART5_TX,,QUADSPI_BK2_IO1,,FMC_D5,,,EVENTOUT,
+PortE,PE9,,TIM1_CH1,,,,,,,,,QUADSPI_BK2_IO2,,FMC_D6,,,EVENTOUT,
+PortE,PE10,,TIM1_CH2N,,,,,,,,,QUADSPI_BK2_IO3,,FMC_D7,,,EVENTOUT,
+PortE,PE11,,TIM1_CH2,,,,SPI4_NSS,,,,,SAI2_SD_B,,FMC_D8,,,EVENTOUT,
+PortE,PE12,,TIM1_CH3N,,,,SPI4_SCK,,,,,SAI2_SCK_B,,FMC_D9,,,EVENTOUT,
+PortE,PE13,,TIM1_CH3,,,,SPI4_MISO,,,,,SAI2_FS_B,,FMC_D10,,,EVENTOUT,
+PortE,PE14,,TIM1_CH4,,,,SPI4_MOSI,,,,,SAI2_MCLK_B,,FMC_D11,,,EVENTOUT,
+PortE,PE15,,TIM1_BKIN,,,,,,,,,,,FMC_D12,,,EVENTOUT,
+PortF,PF0,,,,,I2C2_SDA,,,,,,,,FMC_A0,,,EVENTOUT,
+PortF,PF1,,,,,I2C2_SCL,,,,,,,,FMC_A1,,,EVENTOUT,
+PortF,PF2,,,,,I2C2_SMBA,,,,,,,,FMC_A2,,,EVENTOUT,
+PortF,PF3,,,,,,,,,,,,,FMC_A3,,,EVENTOUT,ADC3_IN9
+PortF,PF4,,,,,,,,,,,,,FMC_A4,,,EVENTOUT,ADC3_IN14
+PortF,PF5,,,,,,,,,,,,,FMC_A5,,,EVENTOUT,ADC3_IN15
+PortF,PF6,,,,TIM10_CH1,,,SAI1_SD_B,,,QUADSPI_BK1_IO3,,,,,,EVENTOUT,ADC3_IN4
+PortF,PF7,,,,TIM11_CH1,,,SAI1_MCLK_B,,,QUADSPI_BK1_IO2,,,,,,EVENTOUT,ADC3_IN5
+PortF,PF8,,,,,,,SAI1_SCK_B,,,TIM13_CH1,QUADSPI_BK1_IO0,,,,,EVENTOUT,ADC3_IN6
+PortF,PF9,,,,,,,SAI1_FS_B,,,TIM14_CH1,QUADSPI_BK1_IO1,,,,,EVENTOUT,ADC3_IN7
+PortF,PF10,,,,,,,,,,,,,,DCMI_D11,,EVENTOUT,ADC3_IN8
+PortF,PF11,,,,,,,,,,,SAI2_SD_B,,FMC_SDNRAS,DCMI_D12,,EVENTOUT,
+PortF,PF12,,,,,,,,,,,,,FMC_A6,,,EVENTOUT,
+PortF,PF13,,,,,FMPI2C1_SMBA,,,,,,,,FMC_A7,,,EVENTOUT,
+PortF,PF14,,,,,FMPI2C1_SCL,,,,,,,,FMC_A8,,,EVENTOUT,
+PortF,PF15,,,,,FMPI2C1_SDA,,,,,,,,FMC_A9,,,EVENTOUT,
+PortG,PG0,,,,,,,,,,,,,FMC_A10,,,EVENTOUT,
+PortG,PG1,,,,,,,,,,,,,FMC_A11,,,EVENTOUT,
+PortG,PG2,,,,,,,,,,,,,FMC_A12,,,EVENTOUT,
+PortG,PG3,,,,,,,,,,,,,FMC_A13,,,EVENTOUT,
+PortG,PG4,,,,,,,,,,,,,FMC_A14/FMC_BA0,,,EVENTOUT,
+PortG,PG5,,,,,,,,,,,,,FMC_A15/FMC_BA1,,,EVENTOUT,
+PortG,PG6,,,,,,,,,,,QUADSPI_BK1_NCS,,,DCMI_D12,,EVENTOUT,
+PortG,PG7,,,,,,,,,USART6_CK,,,,FMC_INT,DCMI_D13,,EVENTOUT,
+PortG,PG8,,,,,,,,SPDIFRX_IN2,USART6_RTS,,,,FMC_SDCLK,,,EVENTOUT,
+PortG,PG9,,,,,,,,SPDIFRX_IN3,USART6_RX,QUADSPI_BK2_IO2,SAI2_FS_B,,FMC_NE2/FMC_NCE3,DCMI_VSYNC,,EVENTOUT,
+PortG,PG10,,,,,,,,,,,SAI2_SD_B,,FMC_NE3,DCMI_D2,,EVENTOUT,
+PortG,PG11,,,,,,,SPI4_SCK,SPDIFRX_IN0,,,,,,DCMI_D3,,EVENTOUT,
+PortG,PG12,,,,,,,SPI4_MISO,SPDIFRX_IN1,USART6_RTS,,,,FMC_NE4,,,EVENTOUT,
+PortG,PG13,TRACED2,,,,,,SPI4_MOSI,,USART6_CTS,,,,FMC_A24,,,EVENTOUT,
+PortG,PG14,TRACED3,,,,,,SPI4_NSS,,USART6_TX,QUADSPI_BK2_IO3,,,FMC_A25,,,EVENTOUT,
+PortG,PG15,,,,,,,,,USART6_CTS,,,,FMC_SDNCAS,DCMI_D13,,EVENTOUT,
+PortH,PH0,,,,,,,,,,,,,,,,EVENTOUT,
+PortH,PH1,,,,,,,,,,,,,,,,EVENTOUT,