ASoC: soc_sdw_utils: remove cs42l45 SmartMic codec name index

ASoC: soc_sdw_utils: remove cs42l45 SmartMic codec name index

Currently the index is 0. In theory, it will not change even if any
other endpoint is not present. But to be consistent and avoid surprise,
remove the index and let the machine driver match the codec name
partially.

Signed-off-by: Bard Liao <yung-chuan.liao@linux.intel.com>
Reviewed-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Link: https://patch.msgid.link/20260316010308.285622-2-yung-chuan.liao@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>