gps: Update SecondaryConfigPath

The seconday config under data/vendor/gps/logs/ could be removed by tester.
Update the SecondaryConfigPath to data/vendor/gps/overlay/.

Test: log config can be updated by pixellogger
Bug: 194493365
Change-Id: I4045908d33abb6c17197ee5c596b945025c5a775
5 files changed