hammerhead: Configure sync_freq feature

Use the (optimized) sync_freq feature to stop frequency
jumping around, causing jitter. We may now even revert
timer_rate and timer_slack to the previous conservative
values.

Change-Id: Ie479a97d00d02b7f2b9867549848f1c251fcb642
hammerhead: Add hardware tunables support: vibrator

Change-Id: If8049f87b06447e7575083043d52716881facbeb
Signed-off-by: Lorenzo M <djmesias@yahoo.es>
hammerhead: Add hardware tunables support: display

Change-Id: I4eba7024542c6fb3727272c54a1521aaa662a64e
Signed-off-by: Lorenzo M <djmesias@yahoo.es>
audio_effects: Add stereowide effect

Change-Id: I5238369a4b04d0061b51313a99edb05932fc927b
Enable gcc 4.8

Change-Id: I4fec10e41b2b676b9f70dba9e304e6833735c853
hammerhead: Enable lockscreen rotation

Change-Id: Ie5e2c2598a960140a831d02c000b37630e219665
hammerhead: Set permissions on force_fast_charge node

Change-Id: Ibccf91903595b3146387dd621f1902ab4fc2edf2