ASoC: Intel: Skylake: Update description for HDaudio kconfig

With 'ASoC: Intel: Skylake: Fix HDaudio and Dmic' series applied,
warning is no longer true. Remove it and update the description.

Signed-off-by: Cezary Rojewski <cezary.rojewski@intel.com>
Link: https://lore.kernel.org/r/20200506212114.8502-1-cezary.rojewski@intel.com


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