[ALSA] hda-codec - Add model entry for Shuttle ST20G5

Modules: HDA Codec driver

Added the model entry for Shuttle ST20G5.
Signed-off-by: NTakashi Iwai <tiwai@suse.de>

sound/pci/hda/patch_realtek.c

@@ -1678,6 +1678,7 @@ static struct hda_board_config alc880_cfg_tbl[] = {
 	{ .pci_subvendor = 0x1025, .pci_subdevice = 0x0077, .config = ALC880_6ST_DIG },
 	{ .pci_subvendor = 0x1025, .pci_subdevice = 0x0078, .config = ALC880_6ST_DIG },
 	{ .pci_subvendor = 0x1025, .pci_subdevice = 0x0087, .config = ALC880_6ST_DIG },
+	{ .pci_subvendor = 0x1297, .pci_subdevice = 0xc790, .config = ALC880_6ST_DIG }, /* Shuttle ST20G5 */
 
 	{ .modelname = "asus", .config = ALC880_ASUS },
 	{ .pci_subvendor = 0x1043, .pci_subdevice = 0x1964, .config = ALC880_ASUS_DIG },