ARM: AM43xx: configs: Update usb host boot defconfig

Convert usb host boot defconfig to use DM, DT. Also enable FIT
support.

Reviewed-by: Tom Rini <trini@konsulko.com>
Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>

configs/am43xx_evm_usbhost_boot_defconfig

@@ -1,8 +1,13 @@
 CONFIG_ARM=y
 CONFIG_AM43XX=y
 CONFIG_TARGET_AM43XX_EVM=y
+CONFIG_DM_SERIAL=y
+CONFIG_DM_GPIO=y
+CONFIG_SPL_STACK_R_ADDR=0x82000000
+CONFIG_DEFAULT_DEVICE_TREE="am437x-gp-evm"
 CONFIG_SPL=y
 CONFIG_ISW_ENTRY_ADDR=0x40300350
+CONFIG_SPL_STACK_R=y
 CONFIG_SYS_EXTRA_OPTIONS="SERIAL1,CONS_INDEX=1,NAND,SPL_USB_HOST_SUPPORT"
 CONFIG_HUSH_PARSER=y
 CONFIG_CMD_BOOTZ=y
@@ -25,10 +30,15 @@ CONFIG_CMD_EXT4=y
 CONFIG_CMD_EXT4_WRITE=y
 CONFIG_CMD_FAT=y
 CONFIG_CMD_FS_GENERIC=y
+CONFIG_OF_CONTROL=y
+CONFIG_DM=y
+CONFIG_DM_MMC=y
 CONFIG_SPI_FLASH=y
 CONFIG_SPI_FLASH_MACRONIX=y
 CONFIG_SYS_NS16550=y
 CONFIG_TI_QSPI=y
+CONFIG_TIMER=y
+CONFIG_OMAP_TIMER=y
 CONFIG_USB=y
 CONFIG_USB_DWC3=y
 CONFIG_USB_DWC3_GADGET=y
@@ -41,3 +51,7 @@ CONFIG_G_DNL_VENDOR_NUM=0x0403
 CONFIG_G_DNL_PRODUCT_NUM=0xbd00
 CONFIG_OF_LIBFDT=y
 CONFIG_SPL_NET_VCI_STRING="AM43xx U-Boot SPL"
+CONFIG_FIT=y
+CONFIG_SPL_OF_LIBFDT=y
+CONFIG_SPL_LOAD_FIT=y
+CONFIG_OF_LIST="am437x-gp-evm am437x-sk-evm am43x-epos-evm am437x-idk-evm"