ARM: at91/dt: sama5d4: use macro instead of numeric value

There is a macro for the irq type.
Signed-off-by: Ludovic Desroches <ludovic.desroches@atmel.com>
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>

arch/arm/boot/dts/sama5d4.dtsi

@@ -817,7 +817,7 @@ macb0: ethernet@f8020000 {
 			i2c2: i2c@f8024000 {
 				compatible = "atmel,at91sam9x5-i2c";
 				reg = <0xf8024000 0x4000>;
-				interrupts = <34 4 6>;
+				interrupts = <34 IRQ_TYPE_LEVEL_HIGH 6>;
 				pinctrl-names = "default";
 				pinctrl-0 = <&pinctrl_i2c2>;
 				#address-cells = <1>;