rockchip: rock-pi-4: Enable USB Gadget

Enable USB gadget for rock-pi-4 boards.

This would help to use fastboot by default.

Note: Connect the Host USB cable (Port A or C) to rock-pi-4
Upper USB 3.0 port.

Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>
1 file changed