arm64: dts: rockchip: Add Radxa ROCK 3C

The Radxa ROCK 3C is a development board with the
Rockchip RK3566 SoC. It has the following features:

- 1/2/4GB LPDDR4
- 1x HDMI Type A
- 1x PCIE 2.0 slot
- 1x FAN connector
- 3.5mm jack with mic
- 1GbE RTL8211F Ethernet
- 1x USB 3.0, 3x USB 2.0
- 40-pin expansion header
- MicroSD card/eMMC socket
- 16MB SPI NOR (gd25lq128d)
- AP6256 or AIC8800 WiFi/BT
Signed-off-by: Chukun Pan <amadeus@jmu.edu.cn>
Link: https://lore.kernel.org/r/20240428123618.72170-3-amadeus@jmu.edu.cn
[dropped rk809-sound and not specified pmic sound properties]
Signed-off-by: Heiko Stuebner <heiko@sntech.de>

arch/arm64/boot/dts/rockchip/Makefile

@@ -91,6 +91,7 @@ dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3566-quartz64-a.dtb
 dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3566-quartz64-b.dtb
 dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3566-radxa-cm3-io.dtb
 dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3566-roc-pc.dtb
+dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3566-rock-3c.dtb
 dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3566-soquartz-blade.dtb
 dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3566-soquartz-cm4.dtb
 dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3566-soquartz-model-a.dtb