GPS_LOCK is defined as a bit mask in the higher layer
defined in gps.conf. GPS HAL reads from gps.conf, yet
this can be reconfigured by gps.h defined new API to
a different value. The current value will be used at
cleanup() time, to optionally lock gps modem to the
configured mode.
This changs also sets SUPL URL to NULL if hostname
comes with set_server() API is a NULL string.
Also optimized configuration_update() implementation
so that no all items will go through the reconfigu
scan.
Also added SUPL_MODE as a parameter in gps.conf which
can be uncommented to over-write the value from config.xml.
This can be used for testing purposes
Bug: 16131208
Bug: 17288144
CRs-fixed: 736966
Change-Id: I12a89b12ff82b6efd7b5567d2fcd6a7e79414c71
af2762ceca