ARM: dts: r8a7794: add VSP1 support

Describe two instances (VSPS and VSPD0) of the VSP1 in the R8A7794 device
tree.
Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

arch/arm/boot/dts/r8a7794.dtsi

@@ -894,6 +894,22 @@ usb2: usb-channel@2 {
 		};
 	};
 
+	vsp1@fe928000 {
+		compatible = "renesas,vsp1";
+		reg = <0 0xfe928000 0 0x8000>;
+		interrupts = <GIC_SPI 267 IRQ_TYPE_LEVEL_HIGH>;
+		clocks = <&mstp1_clks R8A7794_CLK_VSP1_S>;
+		power-domains = <&sysc R8A7794_PD_ALWAYS_ON>;
+	};
+
+	vsp1@fe930000 {
+		compatible = "renesas,vsp1";
+		reg = <0 0xfe930000 0 0x8000>;
+		interrupts = <GIC_SPI 246 IRQ_TYPE_LEVEL_HIGH>;
+		clocks = <&mstp1_clks R8A7794_CLK_VSP1_DU0>;
+		power-domains = <&sysc R8A7794_PD_ALWAYS_ON>;
+	};
+
 	du: display@feb00000 {
 		compatible = "renesas,du-r8a7794";
 		reg = <0 0xfeb00000 0 0x40000>;