arm64: dts: rockchip: Add support for NanoPi R6C

NanoPi R6C is mostly same as R6S variant. It has M2 port instead of a
NIC port and different led labeling.
Signed-off-by: Muhammed Efe Cetin <efectn@protonmail.com>
Link: https://lore.kernel.org/r/0f9ee0baa6c9de4d54dd6d13957ca15a63ec934f.1703934548.git.efectn@protonmail.comSigned-off-by: Heiko Stuebner <heiko@sntech.de>

arch/arm64/boot/dts/rockchip/Makefile

@@ -118,5 +118,6 @@ dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3588s-coolpi-4b.dtb
 dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3588s-indiedroid-nova.dtb
 dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3588s-khadas-edge2.dtb
 dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3588s-nanopi-r6s.dtb
+dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3588s-nanopi-r6c.dtb
 dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3588s-rock-5a.dtb
 dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3588s-orangepi-5.dtb

arch/arm64/boot/dts/rockchip/rk3588s-nanopi-r6c.dts

+// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
+
+/dts-v1/;
+
+#include "rk3588s-nanopi-r6s.dts"
+
+/ {
+	model = "FriendlyElec NanoPi R6C";
+	compatible = "friendlyarm,nanopi-r6c", "rockchip,rk3588s";
+};
+
+&lan2_led {
+	label = "user_led";
+};