ALSA: HDA: Use LPIB position fix for Oaktrail

According to the thread on alsa-devel, the LPIB method is to prefer
for Oaktrail controller chip.

Reference: http://mailman.alsa-project.org/pipermail/alsa-devel/2012-January/047800.htmlSigned-off-by: NDavid Henningsson <david.henningsson@canonical.com>
Signed-off-by: NTakashi Iwai <tiwai@suse.de>

sound/pci/hda/hda_intel.c

@@ -2997,7 +2997,7 @@ static DEFINE_PCI_DEVICE_TABLE(azx_ids) = {
 	  AZX_DCAPS_BUFSIZE | AZX_DCAPS_POSFIX_LPIB }, /* Poulsbo */
 	{ PCI_DEVICE(0x8086, 0x080a),
 	  .driver_data = AZX_DRIVER_SCH | AZX_DCAPS_SCH_SNOOP |
-	  AZX_DCAPS_BUFSIZE},
+	  AZX_DCAPS_BUFSIZE | AZX_DCAPS_POSFIX_LPIB }, /* Oaktrail */
 	/* ICH */
 	{ PCI_DEVICE(0x8086, 0x2668),
 	  .driver_data = AZX_DRIVER_ICH | AZX_DCAPS_OLD_SSYNC |