ARM: dts: r8a7791: Use R-Car Gen 2 fallback binding for vin nodes

Use R-Car Gen 2 fallback binding for vind nodes in DT for r8a7791 SoC.

This has no run-time effect for the current driver as the initialisation
sequence is the same for the SoC-specific binding for r8a7791 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/r8a7791.dtsi

@@ -987,7 +987,7 @@ usb2: usb-channel@2 {
 	};
 
 	vin0: video@e6ef0000 {
-		compatible = "renesas,vin-r8a7791";
+		compatible = "renesas,vin-r8a7791", "renesas,rcar-gen2-vin";
 		reg = <0 0xe6ef0000 0 0x1000>;
 		interrupts = <GIC_SPI 188 IRQ_TYPE_LEVEL_HIGH>;
 		clocks = <&mstp8_clks R8A7791_CLK_VIN0>;
@@ -996,7 +996,7 @@ vin0: video@e6ef0000 {
 	};
 
 	vin1: video@e6ef1000 {
-		compatible = "renesas,vin-r8a7791";
+		compatible = "renesas,vin-r8a7791", "renesas,rcar-gen2-vin";
 		reg = <0 0xe6ef1000 0 0x1000>;
 		interrupts = <GIC_SPI 189 IRQ_TYPE_LEVEL_HIGH>;
 		clocks = <&mstp8_clks R8A7791_CLK_VIN1>;
@@ -1005,7 +1005,7 @@ vin1: video@e6ef1000 {
 	};
 
 	vin2: video@e6ef2000 {
-		compatible = "renesas,vin-r8a7791";
+		compatible = "renesas,vin-r8a7791", "renesas,rcar-gen2-vin";
 		reg = <0 0xe6ef2000 0 0x1000>;
 		interrupts = <GIC_SPI 190 IRQ_TYPE_LEVEL_HIGH>;
 		clocks = <&mstp8_clks R8A7791_CLK_VIN2>;