[ALSA] hda: fix typo for xw4400 PCI sub-ID

The PCI sub-device ID for the HP xw4400 is actually 0x280c.

Signed-off-by: John W. Linville <linville@tuxdriver.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@suse.cz>