ASoC: Intel: ssp-common: Add stub for sof_ssp_get_codec_name

ASoC: Intel: ssp-common: Add stub for sof_ssp_get_codec_name

As this function is now used in sof_board_helpers it requires a build
stub for the case SSP_COMMON is not built in.

Fixes: ba0c7c328762 ("ASoC: Intel: board_helpers: support amp link initialization")
Reviewed-by: Bard Liao <yung-chuan.liao@linux.intel.com>
Reviewed-by: Péter Ujfalusi <peter.ujfalusi@linux.intel.com>
Signed-off-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Link: https://lore.kernel.org/r/20240208165545.93811-21-pierre-louis.bossart@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>