ASoC: cs35l45: Make exports namespaced

Use the new EXPORT_SYMBOL_NS_GPL() for exports from the set of
drivers for cs35l45.

Signed-off-by: Richard Fitzgerald <rf@opensource.cirrus.com>
Link: https://lore.kernel.org/r/20220411165929.1302333-1-rf@opensource.cirrus.com
Signed-off-by: Mark Brown <broonie@kernel.org>
