rockchip: rk3328: Add support for FriendlyARM NanoPi R2C

The NanoPi R2C is a minor variant of NanoPi R2S with the on-board NIC
chip changed from rtl8211e to yt8521s, and otherwise identical to R2S.

The device tree is taken from the kernel linux-next branch:
https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/?id=004589ff9df5b75672a78b6c3c4cba93202b14c9

Signed-off-by: Tianling Shen <cnsztl@gmail.com>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>
diff --git a/arch/arm/dts/Makefile b/arch/arm/dts/Makefile
index c43d804..aa2cdfa 100644
--- a/arch/arm/dts/Makefile
+++ b/arch/arm/dts/Makefile
@@ -123,6 +123,7 @@
 
 dtb-$(CONFIG_ROCKCHIP_RK3328) += \
 	rk3328-evb.dtb \
+	rk3328-nanopi-r2c.dtb \
 	rk3328-nanopi-r2s.dtb \
 	rk3328-roc-cc.dtb \
 	rk3328-rock64.dtb \