ARM: vexpress: Remove A9 PMU compatible values for non-A9 platforms

The ARM perf core code used to rely on the pmu node being
compatible with "arm,cortex-a9-pmu", even when the PMUs
of the different Cortex-A processors are not really
compatible... This is no longer required and actually
became harmful, so remove all the offending values
from Versatile Express DTS files.
Signed-off-by: Pawel Moll <pawel.moll@arm.com>
Signed-off-by: Olof Johansson <olof@lixom.net>

arch/arm/boot/dts/vexpress-v2p-ca15-tc1.dts

@@ -117,7 +117,7 @@ timer {
 	};
 
 	pmu {
-		compatible = "arm,cortex-a15-pmu", "arm,cortex-a9-pmu";
+		compatible = "arm,cortex-a15-pmu";
 		interrupts = <0 68 4>,
 			     <0 69 4>;
 	};

arch/arm/boot/dts/vexpress-v2p-ca15_a7.dts

@@ -134,7 +134,7 @@ timer {
 	};
 
 	pmu {
-		compatible = "arm,cortex-a15-pmu", "arm,cortex-a9-pmu";
+		compatible = "arm,cortex-a15-pmu";
 		interrupts = <0 68 4>,
 			     <0 69 4>;
 	};

arch/arm/boot/dts/vexpress-v2p-ca5s.dts

@@ -111,7 +111,7 @@ L2: cache-controller@2c0f0000 {
 	};
 
 	pmu {
-		compatible = "arm,cortex-a5-pmu", "arm,cortex-a9-pmu";
+		compatible = "arm,cortex-a5-pmu";
 		interrupts = <0 68 4>,
 			     <0 69 4>;
 	};