Fix typo for AMSS 1240 support

AMSS 1240 is declared in "loc_api/libloc_api/Android.mk",
but isn't in "loc_api/Android.mk", resulting in broken GPS.
This commit makes GPS work again.

Change-Id: I2033db0d87b9a003481ad49fee2c9bb3314ba885
Get unbuildable loc_api module out of the way

 * Wrap it in QCPATH ifdef
 * Fixes conflicts when building full package

Change-Id: Id574185bfa24f99b891d37c94ecea4c4a71d6295