dt-bindings: display: bridge: renesas,dsi-csi2-tx: Add r8a779g0

Extend the Renesas DSI display bindings to support the r8a779g0 V4H.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen+renesas@ideasonboard.com>
Reviewed-by: Kieran Bingham <kieran.bingham+renesas@ideasonboard.com>
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Reviewed-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>

Documentation/devicetree/bindings/display/bridge/renesas,dsi-csi2-tx.yaml

@@ -11,13 +11,14 @@ maintainers:
 
 description: |
   This binding describes the MIPI DSI/CSI-2 encoder embedded in the Renesas
-  R-Car V3U SoC. The encoder can operate in either DSI or CSI-2 mode, with up
+  R-Car Gen4 SoCs. The encoder can operate in either DSI or CSI-2 mode, with up
   to four data lanes.
 
 properties:
   compatible:
     enum:
       - renesas,r8a779a0-dsi-csi2-tx    # for V3U
+      - renesas,r8a779g0-dsi-csi2-tx    # for V4H
 
   reg:
     maxItems: 1