Default device volumes not initialised

After fresh rom install default device volumes are not initialised
and therefore muted.

Only after manually changing a device volume it can be used.
IMHO the check for AudioSystem.DEVICE_OUT_DEFAULT here is not correct
since it will not init mIndex and mLastAudibleIndex collections.

Maybe there is a better way to fix this

Conflicts:

	media/java/android/media/AudioService.java

Change-Id: I00c71c153916ce2a4fec99d2b5c9349f73a84aaa