[ALSA] via82xx - Add DXS quirk for Shuttle AK31v2

Shuttle AK31v2 works well with dxs_support=5 (ALSA bug#2926).

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

sound/pci/via82xx.c

@@ -2363,6 +2363,7 @@ static struct snd_pci_quirk dxs_whitelist[] __devinitdata = {
 	SND_PCI_QUIRK(0x1071, 0, "Diverse Notebook", VIA_DXS_NO_VRA),
 	SND_PCI_QUIRK(0x10cf, 0x118e, "FSC Laptop", VIA_DXS_ENABLE),
 	SND_PCI_QUIRK(0x1106, 0, "ASRock", VIA_DXS_SRC),
+	SND_PCI_QUIRK(0x1297, 0xa231, "Shuttle AK31v2", VIA_DXS_SRC),
 	SND_PCI_QUIRK(0x1297, 0xa232, "Shuttle", VIA_DXS_ENABLE),
 	SND_PCI_QUIRK(0x1297, 0xc160, "Shuttle Sk41G", VIA_DXS_ENABLE),
 	SND_PCI_QUIRK(0x1458, 0xa002, "Gigabyte GA-7VAXP", VIA_DXS_ENABLE),