linux-phytec-fsl

powerpc/perf/hv-24x7: Define update_event_count()

Move the code to update an event count into a new function,
update_event_count().

Signed-off-by: Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>