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_dp.c b/drivers/gpu/drm/i915/intel_dp.c
index 24d3bde..632f1b4 100644
--- a/drivers/gpu/drm/i915/intel_dp.c
+++ b/drivers/gpu/drm/i915/intel_dp.c
@@ -224,8 +224,8 @@
 	 */
 	if (IS_eDP(intel_output))
 		aux_clock_divider = 225; /* eDP input clock at 450Mhz */
-	else if (IS_IGDNG(dev))
-		aux_clock_divider = 62; /* IGDNG: input clock fixed at 125Mhz */
+	else if (IS_IRONLAKE(dev))
+		aux_clock_divider = 62; /* IRL input clock fixed at 125Mhz */
 	else
 		aux_clock_divider = intel_hrawclk(dev) / 2;
 
@@ -516,7 +516,7 @@
 	intel_dp_compute_m_n(3, lane_count,
 			     mode->clock, adjusted_mode->clock, &m_n);
 
-	if (IS_IGDNG(dev)) {
+	if (IS_IRONLAKE(dev)) {
 		if (intel_crtc->pipe == 0) {
 			I915_WRITE(TRANSA_DATA_M1,
 				   ((m_n.tu - 1) << PIPE_GMCH_DATA_M_TU_SIZE_SHIFT) |
@@ -608,7 +608,7 @@
 	}
 }
 
-static void igdng_edp_backlight_on (struct drm_device *dev)
+static void ironlake_edp_backlight_on (struct drm_device *dev)
 {
 	struct drm_i915_private *dev_priv = dev->dev_private;
 	u32 pp;
@@ -619,7 +619,7 @@
 	I915_WRITE(PCH_PP_CONTROL, pp);
 }
 
-static void igdng_edp_backlight_off (struct drm_device *dev)
+static void ironlake_edp_backlight_off (struct drm_device *dev)
 {
 	struct drm_i915_private *dev_priv = dev->dev_private;
 	u32 pp;
@@ -643,13 +643,13 @@
 		if (dp_reg & DP_PORT_EN) {
 			intel_dp_link_down(intel_output, dp_priv->DP);
 			if (IS_eDP(intel_output))
-				igdng_edp_backlight_off(dev);
+				ironlake_edp_backlight_off(dev);
 		}
 	} else {
 		if (!(dp_reg & DP_PORT_EN)) {
 			intel_dp_link_train(intel_output, dp_priv->DP, dp_priv->link_configuration);
 			if (IS_eDP(intel_output))
-				igdng_edp_backlight_on(dev);
+				ironlake_edp_backlight_on(dev);
 		}
 	}
 	dp_priv->dpms_mode = mode;
@@ -1073,7 +1073,7 @@
 }
 
 static enum drm_connector_status
-igdng_dp_detect(struct drm_connector *connector)
+ironlake_dp_detect(struct drm_connector *connector)
 {
 	struct intel_output *intel_output = to_intel_output(connector);
 	struct intel_dp_priv *dp_priv = intel_output->dev_priv;
@@ -1108,8 +1108,8 @@
 
 	dp_priv->has_audio = false;
 
-	if (IS_IGDNG(dev))
-		return igdng_dp_detect(connector);
+	if (IS_IRONLAKE(dev))
+		return ironlake_dp_detect(connector);
 
 	temp = I915_READ(PORT_HOTPLUG_EN);