[ALSA] hda-codec - Add quirk for MSI S420

Add a quirk for MSI S420 (based on a guess work).
From: Baruch Even <baruch@ev-en.org>

Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@suse.cz>