[ALSA] hda-codec - Fix pin configs for Gateway MX6453

Fix pin default configs for speaker associations and sequence
for Gateway MX6453 machine with STAC925x codecs.

Signed-off-by: Steve Longerbeam <stevel@embeddedalley.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@suse.cz>