ARM: dts: berlin2q: add interrupt-affinity to pmu node

Add interrupt-affinity property to fix below warning:
[    0.429642] CPU PMU: Failed to parse /soc/pmu/interrupt-affinity[0]

Signed-off-by: Jisheng Zhang <Jisheng.Zhang@synaptics.com>

arch/arm/boot/dts/berlin2q.dtsi

@@ -53,7 +53,7 @@
 		#size-cells = <0>;
 		enable-method = "marvell,berlin-smp";
 
-		cpu@0 {
+		cpu0: cpu@0 {
 			compatible = "arm,cortex-a9";
 			device_type = "cpu";
 			next-level-cache = <&l2>;
@@ -71,21 +71,21 @@
 			>;
 		};
 
-		cpu@1 {
+		cpu1: cpu@1 {
 			compatible = "arm,cortex-a9";
 			device_type = "cpu";
 			next-level-cache = <&l2>;
 			reg = <1>;
 		};
 
-		cpu@2 {
+		cpu2: cpu@2 {
 			compatible = "arm,cortex-a9";
 			device_type = "cpu";
 			next-level-cache = <&l2>;
 			reg = <2>;
 		};
 
-		cpu@3 {
+		cpu3: cpu@3 {
 			compatible = "arm,cortex-a9";
 			device_type = "cpu";
 			next-level-cache = <&l2>;
@@ -113,6 +113,10 @@
 				     <GIC_SPI 31 IRQ_TYPE_LEVEL_HIGH>,
 				     <GIC_SPI 40 IRQ_TYPE_LEVEL_HIGH>,
 				     <GIC_SPI 41 IRQ_TYPE_LEVEL_HIGH>;
+			interrupt-affinity = <&cpu0>,
+					     <&cpu1>,
+					     <&cpu2>,
+					     <&cpu3>;
 		};
 
 		sdhci0: sdhci@ab0000 {