dt-bindings: watchdog: renesas,wdt: Document r8a774e1 support

RZ/G2H (a.k.a. R8A774E1) watchdog implementation is compatible
with R-Car Gen3, therefore add the relevant documentation.

Signed-off-by: Lad Prabhakar <[email protected]>
Reviewed-by: Geert Uytterhoeven <[email protected]>
Reviewed-by: Guenter Roeck <[email protected]>
Acked-by: Rob Herring <[email protected]>
Link: https://lore.kernel.org/r/1594811350-14066-17-git-send-email-prabhakar.mahadev-lad.rj@bp.renesas.com
Signed-off-by: Guenter Roeck <[email protected]>
Signed-off-by: Wim Van Sebroeck <[email protected]>

Author: prabhakarlad

Documentation/devicetree/bindings/watchdog/renesas,wdt.yaml

@@ -41,6 +41,7 @@ properties:
               - renesas,r8a774a1-wdt     # RZ/G2M
               - renesas,r8a774b1-wdt     # RZ/G2N
               - renesas,r8a774c0-wdt     # RZ/G2E
+              - renesas,r8a774e1-wdt     # RZ/G2H
               - renesas,r8a7795-wdt      # R-Car H3
               - renesas,r8a7796-wdt      # R-Car M3-W
               - renesas,r8a77961-wdt     # R-Car M3-W+