Set stream volume to max when userMasterVolume is set to true.

When useMasterVolume is set, we don't want to apply the volume
attenuation twice, once at the stream mixer and once at the master
volume control. It should only be applied once at the master volume
control.

Change-Id: Id5b1cf97571733515b5680c638f11cde8824cfc0
Fixed: b/18460548
1 file changed