ASoC: Fix sdw_utils calling wrong codec init callbacks

Merge series from Richard Fitzgerald <rf@opensource.cirrus.com>:

This series fixes a problem with soc_sdw_utils.c calling the wrong
codec init callbacks, because it assumed that the DAI name could be
used to uniquely identify the codec. This isn't the case, especially
on SDCA which is a generic driver for many parts.
The first patch is needed to add a missing export to SoundWire core.