ASoC: codecs: da7219: Do not export internal symbols

With all users utilizing component->set_jack(), there is no need to
export da7219_aad_jack_det() function.

While at it, remove exports from all other functions as well.

Signed-off-by: Amadeusz Sławiński <amadeuszx.slawinski@linux.intel.com>
Signed-off-by: Cezary Rojewski <cezary.rojewski@intel.com>
Link: https://lore.kernel.org/r/20221031160227.2352630-8-cezary.rojewski@intel.com


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