dt-bindings: net: renesas-ravb: Add support for R8A7796 RAVB

Add a new compatible string for the R8A7796 (M3-W) RAVB.
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: David S. Miller <davem@davemloft.net>

Documentation/devicetree/bindings/net/renesas,ravb.txt

@@ -10,6 +10,7 @@ Required properties:
 	      "renesas,etheravb-r8a7793" if the device is a part of R8A7793 SoC.
 	      "renesas,etheravb-r8a7794" if the device is a part of R8A7794 SoC.
 	      "renesas,etheravb-r8a7795" if the device is a part of R8A7795 SoC.
+	      "renesas,etheravb-r8a7796" if the device is a part of R8A7796 SoC.
 	      "renesas,etheravb-rcar-gen2" for generic R-Car Gen 2 compatible interface.
 	      "renesas,etheravb-rcar-gen3" for generic R-Car Gen 3 compatible interface.
 
@@ -33,7 +34,7 @@ Optional properties:
 - interrupt-parent: the phandle for the interrupt controller that services
 		    interrupts for this device.
 - interrupt-names: A list of interrupt names.
-		   For the R8A7795 SoC this property is mandatory;
+		   For the R8A779[56] SoCs this property is mandatory;
 		   it should include one entry per channel, named "ch%u",
 		   where %u is the channel number ranging from 0 to 24.
 		   For other SoCs this property is optional; if present