engine configurable: AUDIO_SOURCE_UNPROCESSED aligment with legacy
am: c51e05b671

* commit 'c51e05b671ecb639fae5845541fe632bbf1bd8b7':
  engine configurable: AUDIO_SOURCE_UNPROCESSED aligment with legacy

Change-Id: I34dc8a992953d33d1c1ca67b9235bfe1dfd3a9a1