msm7x27a-common: use bt-pan as bluetooth tether interface name

Change-Id: I890293810492629f018fa97a51467ec1fc9f9393
msm7x27a-common:camerawrapper: do not store metadata in buffers

Change-Id: Iefb49ee597e73aa8fc7c9fc3064534106a9c6d86
msm7x27a-common: build power hal

Change-Id: I720daad9333c30a7d5a32b821591fcf1baf3d64b