High definition audio: cannot control volume with standard pin widgets

[Manas Kamal]

I was writing a driver for High definition audio controller, I found that standard HD audio pin widgets cannot control the volume/mute of Sigmatel codec for output. Even direct output widgets cannot control the volume/mute of output converter. To control the volume/mute we need to communicate with the stac codec directly through controller interface. This need fixes as the standard method described by intel, should work.