UBUNTU: SAUCE: perf vendor events powerpc: Update POWER9 events

UBUNTU: SAUCE: perf vendor events powerpc: Update POWER9 events

BugLink: http://bugs.launchpad.net/bugs/1708630
Update and cleanup POWER9 PMU events.

Signed-off-by: Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com>
Cc: Anton Blanchard <anton@au1.ibm.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Link: http://lkml.kernel.org/r/20170802174617.GA32545@us.ibm.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
(cherry picked from commit 3c22ba5243040c13f9a79e3ae70399c0ae0872a4
 git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux.git)
Signed-off-by: Seth Forshee <seth.forshee@canonical.com>