media: rcar-vin: Kconfig: Update help description for VIDEO_RCAR_CSI2 config

The rcar-csi2 driver also supports RZ/G2 SoC's, update the description
to reflect this.
Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Reviewed-by: Chris Paterson <Chris.Paterson2@renesas.com>
Reviewed-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>

drivers/media/platform/rcar-vin/Kconfig

@@ -9,7 +9,7 @@ config VIDEO_RCAR_CSI2
 	select V4L2_FWNODE
 	help
 	  Support for Renesas R-Car MIPI CSI-2 receiver.
-	  Supports R-Car Gen3 SoCs.
+	  Supports R-Car Gen3 and RZ/G2 SoCs.
 
 	  To compile this driver as a module, choose M here: the
 	  module will be called rcar-csi2.