Merge tag 'android-4.4.1_r1' into HEAD

Android 4.4.1 Release 1
hal: Fix issues with USB audio after disconnect

 * Stop the USB audio thread when the refcnt goes to zero.
 * Fix tracking of multiple soundcards.

Change-Id: Ia24dbcfcbcc855cde32c57dbbeb6d07af8f4cce8
Merge remote-tracking branch 'cm/cm-11.0' into kk-4.4