media: rcar-vin: Enable support for r8a774a1

media: rcar-vin: Enable support for r8a774a1

Add the SoC specific information for RZ/G2M(r8a774a1) SoC.
The VIN module of RZ/G2M is similar to R-Car M3-W.

Signed-off-by: Biju Das <biju.das@bp.renesas.com>
Reviewed-by: Fabrizio Castro <fabrizio.castro@bp.renesas.com>
Acked-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
Reviewed-by: Simon Horman <horms+renesas@verge.net.au>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>