Move usb-common driver from usb-core package to a new usb-common package.
The usb-common driver is needed by usb-gadget driver which can be used
without host support.
Signed-off-by: Thomas Richard <thomas.richard@bootlin.com>
Link: https://github.com/openwrt/openwrt/pull/19246
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>