arm64: dts: rockchip: Add dts for Leez RK3399 P710 SBC

P710 is a RK3399 based SBC, designed by Leez [0].

Specification
- Rockchip RK3399
- 4/2GB LPDDR4
- TF sd scard slot
- eMMC
- M.2 B-Key for 4G LTE
- AP6256 for WiFi + BT
- Gigabit ethernet
- HDMI out
- 40 pin header
- USB 2.0 x 2
- USB 3.0 x 1
- USB 3.0 Type-C x 1
- TYPE-C Power supply

[0]https://leez.lenovo.com

Signed-off-by: Andy Yan <andyshrk@gmail.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>

Documentation/devicetree/bindings/arm/rockchip.yaml

@@ -329,6 +329,11 @@ properties:
               - khadas,edge-v
           - const: rockchip,rk3399
 
+      - description: Leez RK3399 P710
+        items:
+          - const: leez,p710
+          - const: rockchip,rk3399
+
       - description: mqmaker MiQi
         items:
           - const: mqmaker,miqi

Documentation/devicetree/bindings/vendor-prefixes.yaml

@@ -503,6 +503,8 @@ patternProperties:
     description: Lantiq Semiconductor
   "^lattice,.*":
     description: Lattice Semiconductor
+  "^leez,.*":
+    description: Leez
   "^lego,.*":
     description: LEGO Systems A/S
   "^lemaker,.*":

arch/arm64/boot/dts/rockchip/Makefile

@@ -20,6 +20,7 @@ dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3399-hugsun-x99.dtb
 dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3399-khadas-edge.dtb
 dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3399-khadas-edge-captain.dtb
 dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3399-khadas-edge-v.dtb
+dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3399-leez-p710.dtb
 dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3399-nanopc-t4.dtb
 dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3399-nanopi-m4.dtb
 dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3399-nanopi-neo4.dtb