Revert "msm8974: Enable deep buffer output as primary"

This reverts commit 64f7962e778c40da51197cbb4360ebb328411efa.

Change-Id: Ifb682b98c3124883c55f7860762c4721e1c8a560
Update audio_policy

USB is now dynamic, AAC got expanded

Change-Id: Id88e81ffa2d68578210a803b95d57294b0734606