replace usb-eth with configfs + hid

Author: doughsay

linux-4.19.defconfig

@@ -210,7 +210,8 @@ CONFIG_SND_SIMPLE_CARD=m
 # CONFIG_HID_GENERIC is not set
 CONFIG_USB_DWC2=m
 CONFIG_USB_GADGET=y
-CONFIG_USB_ETH=y
+CONFIG_USB_CONFIGFS=y
+CONFIG_USB_CONFIGFS_F_HID=y
 CONFIG_MMC=y
 CONFIG_MMC_BLOCK_MINORS=32
 CONFIG_MMC_BCM2835_MMC=y