dt-bindings: soc: rockchip: add rk3588 mipi dcphy syscon

RK3588 CSI and DSI support requires the GRF for DC-PHY.

Signed-off-by: Heiko Stuebner <heiko.stuebner@cherry.de>
Acked-by: Conor Dooley <conor.dooley@microchip.com>
Reviewed-by: Quentin Schulz <quentin.schulz@cherry.de>
Link: https://lore.kernel.org/r/20240506124632.3621378-1-heiko@sntech.de
Signed-off-by: Heiko Stuebner <heiko@sntech.de>

Author: Heiko Stuebner

Documentation/devicetree/bindings/soc/rockchip/grf.yaml

@@ -37,6 +37,7 @@ properties:
               - rockchip,rk3576-vop-grf
               - rockchip,rk3588-bigcore0-grf
               - rockchip,rk3588-bigcore1-grf
+              - rockchip,rk3588-dcphy-grf
               - rockchip,rk3588-hdptxphy-grf
               - rockchip,rk3588-ioc
               - rockchip,rk3588-php-grf