simpleperf: fix jit cache path in report cmd.

1. Separate app cache and zygote cache in ElfDso::GetReportPath().
2. Use GetReportPath() in --dsos option in report cmd.
So "[JIT app cache]" can be used to filter binaries.

Bug: 159155297
Test: run simpleperf_unit_test
Change-Id: Idc52bd1b2496aae30721a224d93621f776f2ae03
6 files changed