msm8960-common: updates for EV

Change-Id: I9c0211fc311861bdbd46a45e9f91c99bff6ad3da
msm8960-common: add auto-focus permission

Change-Id: Ic7b5bf2ce901dd365372c85dc5ce16af57e1a6b1
msm8960-common: use caf audio variant

Change-Id: I07cd2201152791465f9dedd28247f3359dff86f7