ASoC: Intel: sof_sdw: make sof_sdw_quirk static

There's no need to make this variable visible at a higher level.

Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Signed-off-by: Bard Liao <yung-chuan.liao@linux.intel.com>
Link: https://patch.msgid.link/20240827123215.258859-2-yung-chuan.liao@linux.intel.com


Signed-off-by: Mark Brown <broonie@kernel.org>