Blindly adding an sof- prefix to the card name is not user friendly
and causes UCM issues with a driver name truncated to 16 characters.

Simplify to use "sof-bytcht <codec_name>" pattern for all byt* machine
drivers. The sof- prefix is added by the core. A generic "SOF" driver
name is used, and UCMv2 will detect the configuration for this driver
by testing the card name.

Legacy uses are unmodified.
Suggested-by: Jaroslav Kysela <perex@perex.cz>
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Reviewed-by: Bard Liao <yung-chuan.liao@linux.intel.com>
Link: https://lore.kernel.org/r/20200617165616.18511-2-pierre-louis.bossart@linux.intel.comSigned-off-by: Mark Brown <broonie@kernel.org>