Merge commit 'android-4.4.1_r1' into HEAD

* commit 'android-4.4.1_r1':
  hal: Fix the audio loss issue on codec back end
  hal: Fix for Audio Route issue when sound path changes
  audio: fix output flag test in open_output_stream

Conflicts:
	hal/audio_hw.c

Change-Id: Ib470b143c37ca7719757d20f37253cb256c26343