media: vsp1: Add RZ/G support

Document RZ/G1 and RZ/G2 support.
Signed-off-by: Fabrizio Castro <fabrizio.castro@bp.renesas.com>
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Reviewed-by: Simon Horman <horms+renesas@verge.net.au>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>

Documentation/devicetree/bindings/media/renesas,vsp1.txt

@@ -2,13 +2,13 @@
 
 The VSP is a video processing engine that supports up-/down-scaling, alpha
 blending, color space conversion and various other image processing features.
-It can be found in the Renesas R-Car second generation SoCs.
+It can be found in the Renesas R-Car Gen2, R-Car Gen3, RZ/G1, and RZ/G2 SoCs.
 
 Required properties:
 
   - compatible: Must contain one of the following values
-    - "renesas,vsp1" for the R-Car Gen2 VSP1
-    - "renesas,vsp2" for the R-Car Gen3 VSP2
+    - "renesas,vsp1" for the R-Car Gen2 and RZ/G1 VSP1
+    - "renesas,vsp2" for the R-Car Gen3 and RZ/G2 VSP2
 
   - reg: Base address and length of the registers block for the VSP.
   - interrupts: VSP interrupt specifier.