fix
alsa_sound: Force calling of setVoiceVolume at the start of every call.

Fixes the problem whereby some call start at max volume regardless of the
in-call volume setting.

From CM 10.0: I17e1b4adc95a0cafca9b37e0a937a99b0e0e059f

Conflicts:
	alsa_sound/AudioPolicyManagerALSA.cpp