dt-bindings: i2c: renesas,rcar-i2c: R-Car V3U is R-Car Gen4

Despite the name, R-Car V3U is the first member of the R-Car Gen4
family.  I2C on R-Car V3U also supports some extra features (e.g. Slave
Clock Stretch Select), which are supported by other R-Car Gen4 SoCs, but
not by any other R-Car Gen3 SoC.

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>
Signed-off-by: Wolfram Sang <wsa@kernel.org>

Author: geertu

Documentation/devicetree/bindings/i2c/renesas,rcar-i2c.yaml

@@ -46,11 +46,11 @@ properties:
               - renesas,i2c-r8a77980     # R-Car V3H
               - renesas,i2c-r8a77990     # R-Car E3
               - renesas,i2c-r8a77995     # R-Car D3
-              - renesas,i2c-r8a779a0     # R-Car V3U
           - const: renesas,rcar-gen3-i2c # R-Car Gen3 and RZ/G2
 
       - items:
           - enum:
+              - renesas,i2c-r8a779a0     # R-Car V3U
               - renesas,i2c-r8a779f0     # R-Car S4-8
           - const: renesas,rcar-gen4-i2c # R-Car Gen4