Add -fdebug-info-for-profiling flag to emit more debug info for sampling pgo

var pgoProfileProjectsConfigKey = android.NewOnceKey("PgoProfileProjects")

const profileInstrumentFlag = "-fprofile-generate=/data/local/tmp"

const profileSamplingFlag = "-gline-tables-only"

const profileSamplingFlag = "-gmlt -fdebug-info-for-profiling"

const profileUseInstrumentFormat = "-fprofile-use=%s"

const profileUseSamplingFormat = "-fprofile-sample-use=%s"