dt-bindings: phy: rockchip-inno-dsidphy: Document rv1126

Document a compatible string for the rv1126 dsi-dphy.
Signed-off-by: Jagan Teki <jagan@edgeble.ai>
Acked-by: Heiko Stuebner <heiko@sntech.de>
Acked-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20230731110012.2913742-4-jagan@edgeble.aiSigned-off-by: Vinod Koul <vkoul@kernel.org>

Documentation/devicetree/bindings/phy/rockchip,px30-dsi-dphy.yaml

@@ -19,6 +19,7 @@ properties:
       - rockchip,rk3128-dsi-dphy
       - rockchip,rk3368-dsi-dphy
       - rockchip,rk3568-dsi-dphy
+      - rockchip,rv1126-dsi-dphy
 
   reg:
     maxItems: 1