[ALSA] Add support of VIA VT8251/VT8237A HD-Audio controllers

Documentation,HDA Intel driver
Added the support of VIA VT8251/VT8237A HD-Audio controllers.
They are (almost) compatible with Intel ICH6/7.
Signed-off-by: Takashi Iwai <tiwai@suse.de>

Documentation/sound/alsa/ALSA-Configuration.txt

@@ -615,7 +615,8 @@ Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed.
   Module snd-hda-intel
   --------------------
 
-    Module for Intel HD Audio (ICH6, ICH6M, ICH7), ATI SB450
+    Module for Intel HD Audio (ICH6, ICH6M, ICH7), ATI SB450,
+	       VIA VT8251/VT8237A
 
     model	- force the model name
     position_fix - Fix DMA pointer (0 = FIFO size, 1 = none, 2 = POSBUF)

sound/pci/hda/hda_intel.c

@@ -69,7 +69,9 @@ MODULE_SUPPORTED_DEVICE("{{Intel, ICH6},"
 			 "{Intel, ICH6M},"
 			 "{Intel, ICH7},"
 			 "{Intel, ESB2},"
-			 "{ATI, SB450}}");
+			 "{ATI, SB450},"
+			 "{VIA, VT8251},"
+			 "{VIA, VT8237A}}");
 MODULE_DESCRIPTION("Intel HDA driver");
 
 #define SFX	"hda-intel: "
@@ -1452,6 +1454,7 @@ static struct pci_device_id azx_ids[] = {
 	{ 0x8086, 0x27d8, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 }, /* ICH7 */
 	{ 0x8086, 0x269a, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 }, /* ESB2 */
 	{ 0x1002, 0x437b, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 }, /* ATI SB450 */
+	{ 0x1106, 0x3288, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 }, /* VIA VT8251/VT8237A */
 	{ 0, }
 };
 MODULE_DEVICE_TABLE(pci, azx_ids);