perf auxtrace arm: Refactor event list iteration in auxtrace_record__init()

Add find_pmu_for_event() and use to simplify logic in
auxtrace_record_init(). find_pmu_for_event() will be reused in
subsequent patches.

Reviewed-by: John Garry <[email protected]>
Reviewed-by: Jonathan Cameron <[email protected]>
Reviewed-by: Leo Yan <[email protected]>
Signed-off-by: Qi Liu <[email protected]>
Signed-off-by: Yicong Yang <[email protected]>
Cc: Alexander Shishkin <[email protected]>
Cc: Bjorn Helgaas <[email protected]>
Cc: Greg Kroah-Hartman <[email protected]>
Cc: Ingo Molnar <[email protected]>
Cc: James Clark <[email protected]>
Cc: Lorenzo Pieralisi <[email protected]>
Cc: Mark Rutland <[email protected]>
Cc: Mathieu Poirier <[email protected]>
Cc: Mike Leach <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Qi Liu <[email protected]>
Cc: Shameerali Kolothum Thodi <[email protected]>
Cc: Shaokun Zhang <[email protected]>
Cc: Suzuki Poulouse <[email protected]>
Cc: Will Deacon <[email protected]>
Cc: Zeng Prime <[email protected]>
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>

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