More info in audio focus stack entry
More info in audio focus stack entry

Add fields in an audio focus stack entry to track what type of audio
 focus was requested, and why it was lost.
Make audio focus dump easier to read.

Change-Id: I61f6e43c13a32328a07125a2ba0dce1053872c86

xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base