ARM: dts: berlin2cd: move PMU node from soc to root

Cortex-A9 PMU has no associated memory ranges and "make dtbs W=1" warns
about missing reg or ranges property. To avoid the warning, move the PMU
node out of soc subtree to the root.
Signed-off-by: Alexander Monakov <amonakov@ispras.ru>
Signed-off-by: Jisheng Zhang <Jisheng.Zhang@synaptics.com>

arch/arm/boot/dts/berlin2cd.dtsi

@@ -73,6 +73,12 @@ cpu@0 {
 		};
 	};
 
+	pmu {
+		compatible = "arm,cortex-a9-pmu";
+		interrupt-parent = <&gic>;
+		interrupts = <GIC_SPI 30 IRQ_TYPE_LEVEL_HIGH>;
+	};
+
 	refclk: oscillator {
 		compatible = "fixed-clock";
 		#clock-cells = <0>;
@@ -87,11 +93,6 @@ soc@f7000000 {
 
 		ranges = <0 0xf7000000 0x1000000>;
 
-		pmu {
-			compatible = "arm,cortex-a9-pmu";
-			interrupts = <GIC_SPI 30 IRQ_TYPE_LEVEL_HIGH>;
-		};
-
 		sdhci0: sdhci@ab0000 {
 			compatible = "mrvl,pxav3-mmc";
 			reg = <0xab0000 0x200>;