msm8960: support Samsung extended AGPS

  * references:
      http://review.cyanogenmod.org/#/c/45564/
      http://review.cyanogenmod.org/#/c/45565/

Change-Id: I815dc4155cb624f0a90ed7cff98a132baca2d13b
Merge "msm8960: support Samsung extended AGPS" into cm-10.2