ucm2: sof-soundwire: Add support for CS42L43B variant

ucm2: sof-soundwire: Add support for CS42L43B variant

From UCM point of view CS42L43B codec adds 2 new decimators and removes
a control to change Decimator 1 mode from base CS42L43. Thus reuse
CS42L43 files, and guard the CS42L43B additions behind a condition
that the new Decimator controls exist.

Closes: https://github.com/alsa-project/alsa-ucm-conf/pull/665
Link: https://lore.kernel.org/all/20260306152829.3130530-1-mstrozek@opensource.cirrus.com/
Signed-off-by: Maciej Strozek <mstrozek@opensource.cirrus.com>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>