arm64: defconfig: Enable CONFIG_USB_MASS_STORAGE

Enable CONFIG_USB_MASS_STORAGE so that it is possible to
mount the eMMC content in the PC by doing:

modprobe g_mass_storage file=/dev/mmcblk1 removable=1

Signed-off-by: Fabio Estevam <festevam@denx.de>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

Author: Fabio Estevam

arch/arm64/configs/defconfig

@@ -1030,6 +1030,7 @@ CONFIG_USB_CONFIGFS_RNDIS=y
 CONFIG_USB_CONFIGFS_EEM=y
 CONFIG_USB_CONFIGFS_MASS_STORAGE=y
 CONFIG_USB_CONFIGFS_F_FS=y
+CONFIG_USB_MASS_STORAGE=m
 CONFIG_TYPEC=m
 CONFIG_TYPEC_TCPM=m
 CONFIG_TYPEC_TCPCI=m