changed pmu register access to make use of <read/write>_sys_reg
from sysreg.h instead of accessing them directly.
Signed-off-by: NAshok Kumar <ashoks@broadcom.com>
Reviewed-by: NMark Rutland <mark.rutland@arm.com>
Signed-off-by: NWill Deacon <will.deacon@arm.com>