dt-bindings: display: renesas,lvds: Document r8a7742 bindings

Document the RZ/G1H (R8A7742) LVDS bindings.
Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Reviewed-by: Marian-Cristian Rotariu <marian-cristian.rotariu.rb@bp.renesas.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
[Port to the YAML binding document]
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>

Documentation/devicetree/bindings/display/bridge/renesas,lvds.yaml

@@ -16,6 +16,7 @@ description: |
 properties:
   compatible:
     enum:
+      - renesas,r8a7742-lvds # for RZ/G1H compatible LVDS encoders
       - renesas,r8a7743-lvds # for RZ/G1M compatible LVDS encoders
       - renesas,r8a7744-lvds # for RZ/G1N compatible LVDS encoders
       - renesas,r8a774a1-lvds # for RZ/G2M compatible LVDS encoders