[ALSA] hda-codec - Add Asus P5W DH to alc882_cfg_tbl

This patch adds the Asus P5W DH to the ALC882 config table
as a 6stack-dig system.

Signed-off-by: Tobin Davis <tdavis@dsl-only.net>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@suse.cz>