ARM: dts: r8a7794: Use R-Car Gen 2 fallback binding for vin nodes

Use R-Car Gen 2 fallback binding for vind nodes in DT for r8a7794 SoC.

This has no run-time effect for the current driver as the initialisation
sequence is the same for the SoC-specific binding for r8a7794 and the
fallback binding for R-Car Gen 2
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>

arch/arm/boot/dts/r8a7794.dtsi

@@ -801,7 +801,7 @@ qspi: spi@e6b10000 {
 	};
 
 	vin0: video@e6ef0000 {
-		compatible = "renesas,vin-r8a7794";
+		compatible = "renesas,vin-r8a7794", "renesas,rcar-gen2-vin";
 		reg = <0 0xe6ef0000 0 0x1000>;
 		interrupts = <GIC_SPI 188 IRQ_TYPE_LEVEL_HIGH>;
 		clocks = <&mstp8_clks R8A7794_CLK_VIN0>;
@@ -810,7 +810,7 @@ vin0: video@e6ef0000 {
 	};
 
 	vin1: video@e6ef1000 {
-		compatible = "renesas,vin-r8a7794";
+		compatible = "renesas,vin-r8a7794", "renesas,rcar-gen2-vin";
 		reg = <0 0xe6ef1000 0 0x1000>;
 		interrupts = <GIC_SPI 189 IRQ_TYPE_LEVEL_HIGH>;
 		clocks = <&mstp8_clks R8A7794_CLK_VIN1>;