arm64: dts: rockchip: enable dwc3 usb for A95X Z2

Enable dwc3 usb for A95X Z2.

Signed-off-by: Johan Jonker <jbx6244@gmail.com>
Link: https://lore.kernel.org/r/20210209192350.7130-8-jbx6244@gmail.com


Signed-off-by: Heiko Stuebner <heiko@sntech.de>