simpleperf: dump all process maps for etm system wide recording.

If don't dump all process maps, we may miss mapping info needed
to decode etm data.

Bug: 79161490
Test: run simpleperf manually.
Test: run simpleperf_unit_test.
Change-Id: Ic98d1b461b2c11a51147c67e8f269d5be10e962b
1 file changed