sdlog2: Log minimalistic GPS SNR for first 16 satellites
sdlog2: Remove an unreachable comparison
Merge branch 'master' of github.com:PX4/Firmware into gps_logging
Merge pull request #936 from PX4/gps_logging

GPS Satellite SNR logging
Merge remote-tracking branch 'upstream/master' into mtecs
Merge remote-tracking branch 'upstream/mtecs' into mtecs