arm64: dts: allwinner: a64: Drop PMU node

Looks like PMU in A64 is broken, it generates no interrupts at all and
as result 'perf top' shows no events.

Tested on Pine64-LTS.

Fixes: 34a97fc ("arm64: dts: allwinner: a64: Add PMU node")
Cc: Harald Geyer <[email protected]>
Cc: Jared D. McNeill <[email protected]>
Signed-off-by: Vasily Khoruzhick <[email protected]>
Reviewed-by: Emmanuel Vadot <[email protected]>
Signed-off-by: Maxime Ripard <[email protected]>

Author: anarsoul

arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi

@@ -142,15 +142,6 @@
 		clock-output-names = "ext-osc32k";
 	};
 
-	pmu {
-		compatible = "arm,cortex-a53-pmu";
-		interrupts = <GIC_SPI 152 IRQ_TYPE_LEVEL_HIGH>,
-			     <GIC_SPI 153 IRQ_TYPE_LEVEL_HIGH>,
-			     <GIC_SPI 154 IRQ_TYPE_LEVEL_HIGH>,
-			     <GIC_SPI 155 IRQ_TYPE_LEVEL_HIGH>;
-		interrupt-affinity = <&cpu0>, <&cpu1>, <&cpu2>, <&cpu3>;
-	};
-
 	psci {
 		compatible = "arm,psci-0.2";
 		method = "smc";