dt-bindings: serial: renesas,scif: R-Car V3U is R-Car Gen4

Despite the name, R-Car V3U is the first member of the R-Car Gen4
family.  Hence move its compatible value to the R-Car Gen4 section.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Reviewed-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Link: https://lore.kernel.org/r/c57ed00e85778380776330be6183c6861d843c22.1651497024.git.geert+renesas@glider.be
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Documentation/devicetree/bindings/serial/renesas,scif.yaml

@@ -60,12 +60,12 @@ properties:
               - renesas,scif-r8a77980     # R-Car V3H
               - renesas,scif-r8a77990     # R-Car E3
               - renesas,scif-r8a77995     # R-Car D3
-              - renesas,scif-r8a779a0     # R-Car V3U
           - const: renesas,rcar-gen3-scif # R-Car Gen3 and RZ/G2
           - const: renesas,scif           # generic SCIF compatible UART
 
       - items:
           - enum:
+              - renesas,scif-r8a779a0     # R-Car V3U
               - renesas,scif-r8a779f0     # R-Car S4-8
           - const: renesas,rcar-gen4-scif # R-Car Gen4
           - const: renesas,scif           # generic SCIF compatible UART