BACKPORT: drivers/perf: arm_pmu: fix function type mismatch

Bug: 67506682
Change-Id: I06dc3fbef96c06cbfc8619cd2d0f7aa0fa7d99d9
Signed-off-by: Sami Tolvanen <samitolvanen@google.com>
(cherry picked from commit 0f98f46d9920a1aad7d10916eac4b83dbccabf42)
Signed-off-by: Dan Aloni <daloni@magicleap.com>
Signed-off-by: Davide Garberi <dade.garberi@gmail.com>
1 file changed