kernel: support usb storage like USB flash disk

execute this command first:
echo host > /proc/cviusb/otg_role

build/boards/cv180x/cv1800b_milkv_duo_sd/linux/cvitek_cv1800b_milkv_duo_sd_defconfig

@@ -31,6 +31,8 @@ CONFIG_COMPAT_32BIT_TIME=y
 CONFIG_MODULES=y
 CONFIG_MODULE_FORCE_LOAD=y
 CONFIG_MODULE_UNLOAD=y
+CONFIG_BLOCK=y
+CONFIG_BLK_SCSI_REQUEST=y
 # CONFIG_BLK_DEV_BSG is not set
 # CONFIG_MQ_IOSCHED_DEADLINE is not set
 # CONFIG_MQ_IOSCHED_KYBER is not set
@@ -54,6 +56,11 @@ CONFIG_MTD_CMDLINE_PARTS=y
 CONFIG_MTD_BLOCK=y
 CONFIG_MTD_SPI_NOR=y
 CONFIG_SPI_CVI_SPIF=y
+CONFIG_SCSI=y
+CONFIG_SCSI_DMA=y
+CONFIG_SCSI_PROC_FS=y
+CONFIG_BLK_DEV_SD=y
+CONFIG_SCSI_LOWLEVEL=y
 CONFIG_NETDEVICES=y
 # CONFIG_NET_CORE is not set
 # CONFIG_NET_VENDOR_ALACRITECH is not set
@@ -160,6 +167,7 @@ CONFIG_SND_SOC_CV182XADAC=y
 CONFIG_SND_SOC_CV1835_USE_AUDIO_PLL=y
 CONFIG_CV1835_I2S_SUBSYS=y
 CONFIG_USB=y
+CONFIG_USB_STORAGE=y
 CONFIG_USB_DWC2=y
 CONFIG_USB_GADGET=y
 CONFIG_USB_LIBCOMPOSITE=y
@@ -179,6 +187,7 @@ CONFIG_USB_CONFIGFS=y
 CONFIG_USB_CONFIGFS_SERIAL=y
 CONFIG_USB_CONFIGFS_RNDIS=y
 CONFIG_USB_CONFIGFS_ACM=y
+CONFIG_USB_ROLE_SWITCH=y
 CONFIG_MMC=y
 CONFIG_MMC_SDHCI=y
 CONFIG_MMC_SDHCI_PLTFM=y