Add GnssExcessPathInfo (frameworks/base)

Also add combinedAttenuationDb in GnssSingleSatCorrection

Bug: 201253590
Test: atest GnssExcessPathInfoTest
      atest GnssSingleSatCorrectionTest
Change-Id: I7f629f2fbca563a36d1b4543f768b8fabd5d91fd
7 files changed