media: dt-bindings: media: renesas,csi2: Add binding for V4H

Document support for the CSI-2 module in the Renesas V4H (r8a779g0) SoC.

Signed-off-by: Niklas Söderlund <[e-mail]>
Acked-by: Rob Herring <[e-mail]>
Reviewed-by: Geert Uytterhoeven <[e-mail]>
Signed-off-by: Hans Verkuil <[e-mail]>
Signed-off-by: Mauro Carvalho Chehab <[e-mail]>

Documentation/devicetree/bindings/media/renesas,csi2.yaml

···
           - renesas,r8a77980-csi2 # R-Car V3H
           - renesas,r8a77990-csi2 # R-Car E3
           - renesas,r8a779a0-csi2 # R-Car V3U
+          - renesas,r8a779g0-csi2 # R-Car V4H
 
   reg:
     maxItems: 1