[ALSA] hda: sigmatel 9205 family support

Adds support for the '9205 family' which includes some other
part numbers but 9205 is the first one. These are 4 channel
codecs, some have digital mic capability. Support for the digital
mic feature will come later.

Signed-off-by: Matt Porter <mporter@embeddedalley.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@suse.cz>