ARM: dts: msm: Enable PMU on Kera

Add dt node for PMU on kera SoC.

Change-Id: Iffc910eead033b8d15881aeb14fc1aa71299aae3
Signed-off-by: Souradeep Chowdhury <quic_schowdhu@quicinc.com>

qcom/kera.dtsi

@@ -624,6 +624,11 @@
 		};
 	};
 
+	cpu_pmu: cpu-pmu {
+		compatible = "arm,armv8-pmuv3";
+		interrupts = <GIC_PPI 7 IRQ_TYPE_LEVEL_HIGH>;
+	};
+
 	qcom,smp2p_sleepstate {
 		compatible = "qcom,smp2p-sleepstate";
 		qcom,smem-states = <&sleepstate_smp2p_out 0>;