arm64: dts: imx93: add a55 pmu

Add A55 PMU node for perf usage
Reviewed-by: Ye Li <ye.li@nxp.com>
Signed-off-by: Peng Fan <peng.fan@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

arch/arm64/boot/dts/freescale/imx93.dtsi

@@ -72,6 +72,11 @@ clk_ext1: clock-ext1 {
 		clock-output-names = "clk_ext1";
 	};
 
+	pmu {
+		compatible = "arm,cortex-a55-pmu";
+		interrupts = <GIC_PPI 7 (GIC_CPU_MASK_SIMPLE(2) | IRQ_TYPE_LEVEL_HIGH)>;
+	};
+
 	psci {
 		compatible = "arm,psci-1.0";
 		method = "smc";