Perfprofd: Backport elf symbolizer config to ConfigReader

Add an entry to ConfigReader to initialize usage of the ELF symbolizer.
Use this to turn off on-device symbolization for live testing, as
warnings about missing DSOs will pollute the logs and make the tests
fail.

Test: mmma system/extras/perfprofd
Test: perfprofd_test
Change-Id: I3e13db9779e5d2edfb14e2fbe2b3d186ef7af0bd
2 files changed