dt-bindings: timer: renesas,tmu: Add r8a779f0 support

Signed-off-by: NWolfram Sang <wsa+renesas@sang-engineering.com>
Reviewed-by: NGeert Uytterhoeven <geert+renesas@glider.be>
Acked-by: NRob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20220726205858.1199-1-wsa+renesas@sang-engineering.comSigned-off-by: NDaniel Lezcano <daniel.lezcano@linaro.org>

Documentation/devicetree/bindings/timer/renesas,tmu.yaml

@@ -37,6 +37,7 @@ properties:
           - renesas,tmu-r8a77990 # R-Car E3
           - renesas,tmu-r8a77995 # R-Car D3
           - renesas,tmu-r8a779a0 # R-Car V3U
+          - renesas,tmu-r8a779f0 # R-Car S4-8
       - const: renesas,tmu
 
   reg: