libgps/libril-client: Added GPS packets reading

Change-Id: Id4282ffa97d484da3cbbd68e59f9cf83e60cb6b2
gps: Added switching to GPS srs client mode

Change-Id: Ia9ae3f31388df5714aa95b5df65b960965baec5d
Merge branch 'cm-11.0' of github.com:Badadroid/android_device_samsung_wave into HEAD