Properly fix signal issue

Change-Id: Ic4deae7b2a5f96befa5b98f3122eb23da17a6cac
gps: Add support for Qualcomm GPS hardware

 * This ABI is changed, but we aren't using the new features in MR1.
 * Add a little translation for the changed fields and methods.

Change-Id: Ieecc2235b42f64fc69d4651855f4e9edfe7d738d