* Fan controller updates.
This updates the fan controller to be more dynamic on which dp's it uses.
Fan speeds can 1,2,3,4 or low,medium,mid,high,auto. Fans with more
than 3 speeds is not supported by Home Assistant.
Variable speed fans are not supported at this time.
* rename set_dps -> set_dp
* change to use self._dp_id instead of a fixed dp
Co-authored-by: Thomas Davis <tdavis@nersc.gov>
Co-authored-by: Pierre Ståhl <pierre.staahl@gmail.com>