configs: am43xx_hs_evm: Add SPL_USB_STORAGE Support

Enable CONFIG_SPL_USB_STORAGE to support UBS MSC boot support.

Signed-off-by: Faiz Abbas <faiz_abbas@ti.com>
Signed-off-by: Amjad Ouled-Ameur <aouledameur@baylibre.com>
diff --git a/configs/am43xx_hs_evm_defconfig b/configs/am43xx_hs_evm_defconfig
index 3ff2e5b..d4bebd2 100644
--- a/configs/am43xx_hs_evm_defconfig
+++ b/configs/am43xx_hs_evm_defconfig
@@ -33,6 +33,7 @@
 CONFIG_SPL_NET=y
 CONFIG_SPL_NET_VCI_STRING="AM43xx U-Boot SPL"
 CONFIG_SPL_USB_HOST=y
+CONFIG_SPL_USB_STORAGE=y
 CONFIG_SPL_USB_GADGET=y
 CONFIG_SPL_USB_ETHER=y
 CONFIG_SYS_I2C_EEPROM_ADDR_LEN=2