arm64: dts: rockchip: add rk3399-sapphire-excavator-v10-linux.dts

The early (RK_EXCAVATOR_MAIN_V10_20160627) v10 board had some hardware
issues, for example, pwm regulator even a small miscalculation by hardware
and the emmc can't work on hs400 mode. But there still have someone used
the old v10 boards on their hands.

Anyway, that should support the old v10 board with this patch.

Change-Id: If80d890ba713b8dc2893aba406a75af18c0fea03
Signed-off-by: Caesar Wang <[email protected]>

Author: Caesar-github

Documentation/devicetree/bindings/arm/rockchip.txt

@@ -123,6 +123,11 @@ Rockchip platforms device tree bindings
     Required root node properties:
       - compatible = "rockchip,android", "rockchip,rk3399-excavator-edp-avb", "rockchip,rk3399";
 
+- Rockchip RK3399 Excavator Board (Linux):
+    Required root node properties:
+      - compatible = "rockchip,linux", "rockchip,rk3399";
+      - compatible = "rockchip,rk3399-excavator-linux", "rockchip,rk3399-excavator-v10-linux";
+
 - Rockchip RK3399pro evb:
     Required root node properties:
       - compatible = "rockchip,rk3399pro-evb-v10", "rockchip,rk3399pro";