hh: Reset boost params to recommended values

 * Restore performance after recent changes

Change-Id: I1561fe109cbcb74708b2e35a65c6a816c38b994a
audio_effects: Add stereowide effect

Change-Id: I5238369a4b04d0061b51313a99edb05932fc927b
Enable gcc 4.8

Change-Id: I4fec10e41b2b676b9f70dba9e304e6833735c853