audio: Unhide PCM offload enums

Change-Id: Iab074ae64d293781769032cc902e72a93374679f
Merge branch 'cm' into HEAD // potential taint

Signed-off-by: DHOMD <DHO@dho.im>

Conflicts:
	include/system/audio.h

Change-Id: If681c44c2aca38c37b13fa273716187ca1536988