dt-bindings: arm: rockchip: Add Xunlong Orange Pi 5 Max

Add devicetree binding for the Xunlong Orange Pi 5 Max board.

The Orange Pi 5 Max is a single board computer powered by the Rockchip
RK3588 similar to the Orange Pi 5 Plus.

Acked-by: Conor Dooley <conor.dooley@microchip.com>
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Jimmy Hon <honyuenkwun@gmail.com>
Link: https://lore.kernel.org/r/20250109051619.1825-3-honyuenkwun@gmail.com
Signed-off-by: Heiko Stuebner <heiko@sntech.de>

Author: jimmyhon

Documentation/devicetree/bindings/arm/rockchip.yaml

@@ -1129,9 +1129,11 @@ properties:
           - const: xunlong,orangepi-3b
           - const: rockchip,rk3566
 
-      - description: Xunlong Orange Pi 5 Plus
+      - description: Xunlong Orange Pi 5 Max/Plus
         items:
-          - const: xunlong,orangepi-5-plus
+          - enum:
+              - xunlong,orangepi-5-max
+              - xunlong,orangepi-5-plus
           - const: rockchip,rk3588
 
       - description: Xunlong Orange Pi R1 Plus / LTS