stm32/boards/LEGO_HUB_NO6: Use multi-colour LED for mboot status.

This gives more information to the user when doing updates from SPI flash.
Signed-off-by: Damien George <damien@micropython.org>

ports/stm32/boards/LEGO_HUB_NO6/board_init.c

@@ -124,11 +124,11 @@ void board_mboot_led_init(void) {
 
 void board_mboot_led_state(int led, int state) {
     if (state) {
-        hub_display_set(28, 0x7fff);
-        hub_display_set(31, 0x7fff);
+        hub_display_set(28 + led, 0x7fff);
+        hub_display_set(31 + led, 0x7fff);
     } else {
-        hub_display_set(28, 0);
-        hub_display_set(31, 0);
+        hub_display_set(28 + led, 0);
+        hub_display_set(31 + led, 0);
     }
     hub_display_update();
 }

ports/stm32/boards/LEGO_HUB_NO6/mpconfigboard.h

@@ -145,6 +145,8 @@
 #define MBOOT_SPIFLASH_CONFIG                    (&board_mboot_spiflash_config)
 
 #define MBOOT_LED1                               0
+#define MBOOT_LED2                               1
+#define MBOOT_LED3                               2
 #define MBOOT_BOARD_LED_INIT                     board_mboot_led_init
 #define MBOOT_BOARD_LED_STATE                    board_mboot_led_state