media: dt-bindings: media: renesas,csi2: Add r8a77961 support

Add the compatible string for M3-W+ (r8a77961) to the list of supported
SoCs.
Signed-off-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>

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

@@ -25,6 +25,7 @@ properties:
           - renesas,r8a774e1-csi2 # RZ/G2H
           - renesas,r8a7795-csi2  # R-Car H3
           - renesas,r8a7796-csi2  # R-Car M3-W
+          - renesas,r8a77961-csi2 # R-Car M3-W+
           - renesas,r8a77965-csi2 # R-Car M3-N
           - renesas,r8a77970-csi2 # R-Car V3M
           - renesas,r8a77980-csi2 # R-Car V3H