msm7x27a-common: revert to old gps hal

Change-Id: I4a59bf47d2cd422ed8e4509654acda660b48d825

Conflicts:
	BoardConfigCommon.mk
	msm7x27a-common.mk
msm7x27a-common: remove unused gps hal

Change-Id: Ied7560b8de84ac40b7b4cfda4b0d25061374cca8

Conflicts:
	gps/etc/gps.conf