ASoC/SoundWire: add support for RT712VB quirk

[plbossart]

Simpler version that what was shared before in https://github.com/thesofproject/linux/pull/4995

No major change other than better data structures and preparation for more Function-level support.

For now we do need the RT712VB quirk so that PR adds only this "small" part which is already rather intrusive between SoundWire and ASoC/SOF domains.