ALSA: hda - Don't call stac92xx_parse_auto_config with wrong dig_in

Don't use uneeded/wrong third parameter for stac92xx_parse_auto_config
in patch_stac92hd71bxx (no SPDIF in).

Signed-off-by: Herton Ronaldo Krzesinski <herton@mandriva.com.br>
Signed-off-by: Takashi Iwai <tiwai@suse.de>