Merge tag 'android-4.4.1_r1' of https://android.googlesource.com/device/lge/hammerhead into cm-11.0

Android 4.4.1 Release 1

Change-Id: I59da4332a8f467d2beebd0ec41bc31b3a9860fca
hammerhead: Always keep 3 buffers ready

 * Reduces overall jank system-wide

Change-Id: I37f6021237c81197063d3fd1fd7e5e07626490c9
hammerhead: Better mount options to improve performance

Change-Id: I18f7165c2ff8547b7968d946336d948fe30522b1
hammerhead: Enable offload for USB audio

Change-Id: I7cc9580865da63330a0bf54d5716ca23a2d6216c