agp/intel: Support the extended physical addressing bits on Sandybridge.

Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
[anholt: Split this patch out of a larger patch for Sandybridge fixes]
Signed-off-by: Eric Anholt <eric@anholt.net>
diff --git a/drivers/char/agp/intel-agp.c b/drivers/char/agp/intel-agp.c
index d836a71..5bbc7be 100644
--- a/drivers/char/agp/intel-agp.c
+++ b/drivers/char/agp/intel-agp.c
@@ -816,9 +816,9 @@
 	{ PCI_DEVICE_ID_INTEL_IRONLAKE_MC2_HB, PCI_DEVICE_ID_INTEL_IRONLAKE_M_IG,
 	    "HD Graphics", NULL, &intel_i965_driver },
 	{ PCI_DEVICE_ID_INTEL_SANDYBRIDGE_HB, PCI_DEVICE_ID_INTEL_SANDYBRIDGE_IG,
-	    "Sandybridge", NULL, &intel_i965_driver },
+	    "Sandybridge", NULL, &intel_gen6_driver },
 	{ PCI_DEVICE_ID_INTEL_SANDYBRIDGE_M_HB, PCI_DEVICE_ID_INTEL_SANDYBRIDGE_M_IG,
-	    "Sandybridge", NULL, &intel_i965_driver },
+	    "Sandybridge", NULL, &intel_gen6_driver },
 	{ 0, 0, NULL, NULL, NULL }
 };