simpleperf: add options to keep failed unwinding results in record cmd.
We want to add extra info for debugging unwinding failures while not
affecting normal recording/reporting process.
So add --keep-failed-unwinding-result to keep failed unwnding reasons,
and add --keep-failed-unwinding-stack to keep failed unwinding stack
data. The former is lightweight and can be used to give user some
explanation. And both are needed to keep enough info for debugging.
Bug: 181075274
Test: run simpleperf_unit_test
Test: run simpleperf manually
Change-Id: I8d65ad4957025d372099a66f749050f5c37aba81
8 files changed