arm64: dts: rockchip: Add Radxa ROCK Pi 4C support

Rock PI 4C has AP6256 Wifi/BT, PoE, miniDP, USB Host enabled
GPIO pin change compared to 4B, 4C.

So, add or enable difference nodes/properties in 4C dts
by including common dtsi.

Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
Link: https://lore.kernel.org/r/20200807094826.12019-4-jagan@amarulasolutions.com


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