dt-bindings: arm: rockchip: Add Cool Pi CM5

Add Cool Pi CM5, a board powered by RK3588

CM5 EVB works with a mother board connect with
CM5
Signed-off-by: Andy Yan <andyshrk@163.com>
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20231212124340.1897502-1-andyshrk@163.comSigned-off-by: Heiko Stuebner <heiko@sntech.de>

Documentation/devicetree/bindings/arm/rockchip.yaml

@@ -97,6 +97,13 @@ properties:
           - const: chipspark,rayeager-px2
           - const: rockchip,rk3066a
 
+      - description: Cool Pi Compute Module 5(CM5) EVB
+        items:
+          - enum:
+              - coolpi,pi-cm5-evb
+          - const: coolpi,pi-cm5
+          - const: rockchip,rk3588
+
       - description: Cool Pi 4 Model B
         items:
           - const: coolpi,pi-4b