powerpc/perf: Fix PM_BRU_CMPL event code for power9

Use 0x10012 event code for PM_BRU_CMPL event in power9 event list
instead of current 0x40060.

Fixes: 34922527

 ('powerpc/perf: Add power9 event list macros for generic and cache events')
Cc: stable@vger.kernel.org # v4.9+
Signed-off-by: Madhavan Srinivasan <maddy@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>