dt-bindings: can: renesas,rcar-canfd: Document R-Car V4H support

Document support for the CAN-FD Interface on the Renesas R-Car V4H
(R8A779G0) SoC.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Acked-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/all/d8158c78cc786c432df5a5e5bbad848b717aca71.1674499048.git.geert+renesas@glider.beSigned-off-by: Marc Kleine-Budde <mkl@pengutronix.de>

Documentation/devicetree/bindings/net/can/renesas,rcar-canfd.yaml

@@ -31,6 +31,7 @@ properties:
       - items:
           - enum:
               - renesas,r8a779a0-canfd     # R-Car V3U
+              - renesas,r8a779g0-canfd     # R-Car V4H
           - const: renesas,rcar-gen4-canfd # R-Car Gen4
 
       - items: