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>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>
diff --git a/arch/arm/dts/Makefile b/arch/arm/dts/Makefile
index bcd89af6..5726156 100644
--- a/arch/arm/dts/Makefile
+++ b/arch/arm/dts/Makefile
@@ -138,6 +138,7 @@
 	rk3399-roc-pc-mezzanine.dtb \
 	rk3399-rock-pi-4a.dtb \
 	rk3399-rock-pi-4b.dtb \
+	rk3399-rock-pi-4c.dtb \
 	rk3399-rock960.dtb \
 	rk3399-rockpro64.dtb \
 	rk3399pro-rock-pi-n10.dtb