ALSA: hda - Add model=ref for Intel board with STAC9221

An intel board (8086:0204) works only with model=ref.

Reference: Novell bug #406529
	https://bugzilla.novell.com/show_bug.cgi?id=406529

Signed-off-by: Takashi Iwai <tiwai@suse.de>
1 file changed