drm/i915: Make IS_G4X only take dev_priv

Saves 472 bytes of .rodata strings.

v2: Add parantheses around dev_priv. (Ville Syrjala)

Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Reviewed-by: David Weinehall <david.weinehall@linux.intel.com>
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Acked-by: Jani Nikula <jani.nikula@linux.intel.com>
Acked-by: Chris Wilson <chris@chris-wilson.co.uk>
Acked-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
diff --git a/drivers/gpu/drm/i915/intel_hdmi.c b/drivers/gpu/drm/i915/intel_hdmi.c
index f656245..c7d9cdd 100644
--- a/drivers/gpu/drm/i915/intel_hdmi.c
+++ b/drivers/gpu/drm/i915/intel_hdmi.c
@@ -1889,7 +1889,7 @@
 		intel_hdmi->write_infoframe = vlv_write_infoframe;
 		intel_hdmi->set_infoframes = vlv_set_infoframes;
 		intel_hdmi->infoframe_enabled = vlv_infoframe_enabled;
-	} else if (IS_G4X(dev)) {
+	} else if (IS_G4X(dev_priv)) {
 		intel_hdmi->write_infoframe = g4x_write_infoframe;
 		intel_hdmi->set_infoframes = g4x_set_infoframes;
 		intel_hdmi->infoframe_enabled = g4x_infoframe_enabled;
@@ -1996,7 +1996,7 @@
 	 * to work on real hardware. And since g4x can send infoframes to
 	 * only one port anyway, nothing is lost by allowing it.
 	 */
-	if (IS_G4X(dev))
+	if (IS_G4X(dev_priv))
 		intel_encoder->cloneable |= 1 << INTEL_OUTPUT_HDMI;
 
 	intel_dig_port->port = port;