GpsLocationProvider: Store new Location before onGpsStatusChanged is sent

In reportLocation() the new location is now stored before the callback
onGpsStatusChanged(GPS_EVENT_FIRST_FIX) is sent. This will prevent users
from getting a faulty location from LocationManager.getLastKnownLocation()
after receiving onGpsStatusChanged(GPS_EVENT_FIRST_FIX).

Change-Id: I6c654b2acbf2e216c99058a20f068bf4721a1c7a