ARM: dts: r7s9210: Add IRQC device node

Enable support for the IRQC on RZ/A2M, which is a small front-end to the
GIC.  This allows to use up to 8 external interrupts with configurable
sense select.
Signed-off-by: Chris Brandt <chris.brandt@renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

arch/arm/boot/dts/r7s9210.dtsi

@@ -473,6 +473,25 @@ bsid: chipid@fcfe8004 {
 			reg = <0xfcfe8004 4>;
 		};
 
+		irqc: interrupt-controller@fcfef800 {
+			compatible = "renesas,r7s9210-irqc",
+				     "renesas,rza1-irqc";
+			#interrupt-cells = <2>;
+			#address-cells = <0>;
+			interrupt-controller;
+			reg = <0xfcfef800 0x6>;
+			interrupt-map =
+				<0 0 &gic GIC_SPI 4 IRQ_TYPE_LEVEL_HIGH>,
+				<1 0 &gic GIC_SPI 5 IRQ_TYPE_LEVEL_HIGH>,
+				<2 0 &gic GIC_SPI 6 IRQ_TYPE_LEVEL_HIGH>,
+				<3 0 &gic GIC_SPI 7 IRQ_TYPE_LEVEL_HIGH>,
+				<4 0 &gic GIC_SPI 8 IRQ_TYPE_LEVEL_HIGH>,
+				<5 0 &gic GIC_SPI 9 IRQ_TYPE_LEVEL_HIGH>,
+				<6 0 &gic GIC_SPI 10 IRQ_TYPE_LEVEL_HIGH>,
+				<7 0 &gic GIC_SPI 11 IRQ_TYPE_LEVEL_HIGH>;
+			interrupt-map-mask = <7 0>;
+		};
+
 		pinctrl: pin-controller@fcffe000 {
 			compatible = "renesas,r7s9210-pinctrl";
 			reg = <0xfcffe000 0x1000>;