Revert "my mistake"

This reverts commit 28995f240bc5a0ae889cd010a3d791b2f2790ee2.
Revert "msm7x27a-common: rename phone overlay"

This reverts commit aa720092c5501907d09745ed7348528f8cbd0aa5.
msm7x27a-common: build memtrack hal

Change-Id: I38f5b60e4c68b508f9a33c7275e5a6b972763e83
msm7x27a-common:libaudio: remove snd devices hal, we don't use it

Change-Id: I462989ee0f9f51a4d0621a9bffc5aba9bf26e177

Conflicts:
	libaudio/AudioHardware.cpp