arm-cci500: Don't enable PMU driver by default

Disable building CCI-500 PMU driver by default.
Reported-by: NRussell King <linux@arm.linux.org.uk>
Cc: Punit Agrawal <punit.agrawal@arm.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: arm@kernel.org
Signed-off-by: NSuzuki K. Poulose <suzuki.poulose@arm.com>
Signed-off-by: NOlof Johansson <olof@lixom.net>

drivers/bus/Kconfig

@@ -36,7 +36,6 @@ config ARM_CCI400_PORT_CTRL
 
 config ARM_CCI500_PMU
 	bool "ARM CCI500 PMU support"
-	default y
 	depends on (ARM && CPU_V7) || ARM64
 	depends on PERF_EVENTS
 	select ARM_CCI_PMU