perf test: Test addr2line unwinding works with inline functions

perf test: Test addr2line unwinding works with inline functions

Add a test that seeks to see inline functions correctly displayed in
'perf script' from the inlineloop workload.

Committer testing:

  # perf test 'addr2line inline unwinding'
   76: test addr2line inline unwinding                                 : Ok
  # perf test -vv 'addr2line inline unwinding'
   76: test addr2line inline unwinding:
  --- start ---
  test child forked, pid 1508628
  Inline unwinding verification test
  [ perf record: Woken up 129 times to write data ]
  [ perf record: Captured and wrote 32.282 MB /tmp/perf-test-inline-addr2line.L4Sz8QtADJ/perf.data (4014 samples) ]
  Inline unwinding verification test [Success]
  ---- end(0) ----
   76: test addr2line inline unwinding                                 : Ok
  #

Reviewed-by: James Clark <james.clark@linaro.org>
Signed-off-by: Ian Rogers <irogers@google.com>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Howard Chu <howardchu95@gmail.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephen Brennan <stephen.s.brennan@oracle.com>
Cc: Tony Jones <tonyj@suse.de>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>