drm/i915: Add initial bits for VGA modesetting bringup on Sandybridge.

Signed-off-by: Eric Anholt <eric@anholt.net>
diff --git a/drivers/gpu/drm/i915/intel_bios.c b/drivers/gpu/drm/i915/intel_bios.c
index 15fbc1b..70c9d4b 100644
--- a/drivers/gpu/drm/i915/intel_bios.c
+++ b/drivers/gpu/drm/i915/intel_bios.c
@@ -247,6 +247,7 @@
 parse_general_features(struct drm_i915_private *dev_priv,
 		       struct bdb_header *bdb)
 {
+	struct drm_device *dev = dev_priv->dev;
 	struct bdb_general_features *general;
 
 	/* Set sensible defaults in case we can't find the general block */
@@ -263,7 +264,7 @@
 			if (IS_I85X(dev_priv->dev))
 				dev_priv->lvds_ssc_freq =
 					general->ssc_freq ? 66 : 48;
-			else if (IS_IRONLAKE(dev_priv->dev))
+			else if (IS_IRONLAKE(dev_priv->dev) || IS_GEN6(dev))
 				dev_priv->lvds_ssc_freq =
 					general->ssc_freq ? 100 : 120;
 			else