audio policy: apply default device volume

Make sure that we apply default device volume to
active outputs in case no specific volume for selected
device is received afterward.

Bug: 9760269.
Change-Id: I216de40396e1075e77493c97e8b192cd3a31d546

Conflicts:

	audio/AudioPolicyManagerBase.cpp
Added ifndef ICS_AUDIO_BLOB around non-existent functions (2/3)

For older audio blobs where is_source_active and is_stream_active_remotely
doesn't exist, receiving a notification and dumpsys crashes the audio service.

Change-Id: I2ec4dcece3c95c9972ce78f1f7a38fe522dd7802