ARM: dts: sun8i: Add NMI interrupt controller node

The NMI interrupt controller is in charge of the NMI pin exposed by
the SoC to the PMIC. The PMIC signals interrupts through this.
Signed-off-by: NChen-Yu Tsai <wens@csie.org>
Signed-off-by: NMaxime Ripard <maxime.ripard@free-electrons.com>

arch/arm/boot/dts/sun8i-a23-a33.dtsi

@@ -579,6 +579,14 @@
 				     <GIC_SPI 41 IRQ_TYPE_LEVEL_HIGH>;
 		};
 
+		nmi_intc: interrupt-controller@01f00c0c {
+			compatible = "allwinner,sun6i-a31-sc-nmi";
+			interrupt-controller;
+			#interrupt-cells = <2>;
+			reg = <0x01f00c0c 0x38>;
+			interrupts = <GIC_SPI 32 IRQ_TYPE_LEVEL_HIGH>;
+		};
+
 		prcm@01f01400 {
 			compatible = "allwinner,sun8i-a23-prcm";
 			reg = <0x01f01400 0x200>;