hh: Collapse primary audio outputs

 * These are exactly the same. Just OR the flags together instead of
   confusing the HAL.
 * This appears to fix the occasional crackle on low-latency streams
   on other devices, so adding it here.

Change-Id: Id27093a09e6d0e296714221eae9f59f6d431f758
audio_effects: Add stereowide effect

Change-Id: I5238369a4b04d0061b51313a99edb05932fc927b
Enable gcc 4.8

Change-Id: I4fec10e41b2b676b9f70dba9e304e6833735c853
hammerhead: Enable lockscreen rotation

Change-Id: Ie5e2c2598a960140a831d02c000b37630e219665