Hammerhead - gps: modify NMEA_PROVIDER to Modem processor

This fixes duplicate NMEA problem observed when NMEA is generated on AP side.

Bug: 12555056

Change-Id: I4431dfa81c4cb407ace6c434e991d5491ab90550
Merge "Hammerhead - gps: modify NMEA_PROVIDER to Modem processor" into kk