[ALSA] hda-codec - Add laptop-automute model for AD1986A

Added a new model laptop-automute for AD1986A, which has the HP jack
detection and auto-muting of the speaker.  Currently, it's used for
Lenovo N100.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@suse.cz>