Split gps configuration file

gps.conf now split into
sap.conf : sensor assisted positioning items
gps.conf : items used in open source
           (gps.conf moved to open source)

CRs-fixed: 461129
Change-Id: I819230ee3bb13aad0b91f7d33bfb9e57b6d1abe1
msm7x27a-common: clean-up uses of BOARD_VENDOR_QCOM_GPS_LOC_API, copy sap.conf

and don't build this gps hal is qc_perf is enable

Change-Id: I89feec001180480cba69325b7b886b7e776458cd
msm7x27a-common: RIP lgapversion you served well, now time for script

Change-Id: I946213ac6c08f7a047134085f3b3c8809453eae2