Apply keybow customizations * Remove precompiled USB ETH device * CONFIG_USB_ETH * Enable USB ConfigFS * `CONFIG_USB_CONFIGFS=y` * Enable various ConfigFS network device drivers * `CONFIG_USB_CONFIGFS_NCM=y` * `CONFIG_USB_CONFIGFS_ECM=y` * `CONFIG_USB_CONFIGFS_RNDIS=y` * Enable ConfigFS HID device functionality * `CONFIG_USB_CONFIGFS_F_HID=y` * Enable network device bonding * `CONFIG_BONDING=y` * Add libusbgx for USB gadget device tools * `BR2_PACKAGE_LIBUSBGX=y`