drm/i915: Fix product names and #defines

IGD* isn't a useful name.  Replace with the codenames, as sourced from
pci.ids.

Signed-off-by: Adam Jackson <ajax@redhat.com>
[anholt: Fixed up for merge with pineview/ironlake changes]
Signed-off-by: Eric Anholt <eric@anholt.net>
diff --git a/drivers/gpu/drm/i915/intel_i2c.c b/drivers/gpu/drm/i915/intel_i2c.c
index b94acc4..8673c73 100644
--- a/drivers/gpu/drm/i915/intel_i2c.c
+++ b/drivers/gpu/drm/i915/intel_i2c.c
@@ -39,7 +39,7 @@
 	struct drm_i915_private *dev_priv = dev->dev_private;
 
 	/* When using bit bashing for I2C, this bit needs to be set to 1 */
-	if (!IS_IGD(dev))
+	if (!IS_PINEVIEW(dev))
 		return;
 	if (enable)
 		I915_WRITE(DSPCLK_GATE_D,
@@ -128,7 +128,7 @@
 {
 	struct drm_i915_private *dev_priv = dev->dev_private;
 
-	if (IS_IGDNG(dev)) {
+	if (IS_IRONLAKE(dev)) {
 		I915_WRITE(PCH_GMBUS0, 0);
 	} else {
 		I915_WRITE(GMBUS0, 0);