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>
Merge branch 'cm-11.0' of https://github.com/CyanogenMod/android_device_lge_hammerhead into cm-11.0_HAZE
hammerhead: Use CM default overlays

Change-Id: I07f11cf3f8fb4cdefb71d5a10b1b1b8ed88d7aca
Signed-off-by: Lorenzo M <djmesias@yahoo.es>
hammerhead: hasHighBrightness flag to true

Change-Id: I705a13444988c3a7d701139ad9ec91f2a3bd2204
hammerhead: Disable forced use of triple framebuffers

 * This can cause additional input latency and isn't really
   needed on this hardware.

Change-Id: I662915c08f9e8b9eef609319806feda880acc7a5