ARM: sunxi: DT: Convert the DTs to use the generic interrupt header

The NMI IRQ controller uses the standard flags definition for the IRQ level and
edges.

Use the common header to use defines instead of opaque numbers.

Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
diff --git a/arch/arm/boot/dts/sun7i-a20-m3.dts b/arch/arm/boot/dts/sun7i-a20-m3.dts
index 15be3ea..5add9f2 100644
--- a/arch/arm/boot/dts/sun7i-a20-m3.dts
+++ b/arch/arm/boot/dts/sun7i-a20-m3.dts
@@ -52,6 +52,7 @@
 #include "sunxi-common-regulators.dtsi"
 
 #include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/interrupt-controller/irq.h>
 #include <dt-bindings/pinctrl/sun4i-a10.h>
 
 / {
@@ -130,7 +131,7 @@
 				compatible = "x-powers,axp209";
 				reg = <0x34>;
 				interrupt-parent = <&nmi_intc>;
-				interrupts = <0 8>;
+				interrupts = <0 IRQ_TYPE_LEVEL_LOW>;
 
 				interrupt-controller;
 				#interrupt-cells = <1>;