tamsui-common-legacy: add local libaudio

import from CAF M76XXUSNEKNLYA2545

Change-Id: I32c5124afc9a8b25ae4849e708a6cf29d6f10125
libaudio: Add missing wired headphone route

Change-Id: I2667701d27aa65a3d50cc98fb693af1bdfde3637