Enable tunnel audio

* Out with LPA, tunnel mode is the new hotness.
 * Tunnel mode sends compressed audio streams directly to the Hexagon
   where it's decoded and processed, rather than decoding in userspace
   and sending huge buffers of PCM data.

Change-Id: I51fd1c4532a5a25fb22612278d28129392bf99cc
Remove unused media properties

Change-Id: Id0a2df30621f9afabe8fb9ca0063f04da3a29cce