drm/i915: Enable the overlay right after primary and cursor planes

Again follow the same sequence for all generations, because doing
otherwise just doesn't make sense.
Signed-off-by: NVille Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: NRodrigo Vivi <rodrigo.vivi@gmail.com>
Signed-off-by: NDaniel Vetter <daniel.vetter@ffwll.ch>

drivers/gpu/drm/i915/intel_display.c

@@ -3622,11 +3622,11 @@ static void valleyview_crtc_enable(struct drm_crtc *crtc)
 	intel_enable_plane(dev_priv, plane, pipe);
 	intel_crtc_update_cursor(crtc, true);
 
-	intel_update_fbc(dev);
-
 	/* Give the overlay scaler a chance to enable if it's on this pipe */
 	intel_crtc_dpms_overlay(intel_crtc, true);
 
+	intel_update_fbc(dev);
+
 	mutex_unlock(&dev_priv->dpio_lock);
 }
 
@@ -3664,11 +3664,11 @@ static void i9xx_crtc_enable(struct drm_crtc *crtc)
 	if (IS_G4X(dev))
 		g4x_fixup_plane(dev_priv, pipe);
 
-	intel_update_fbc(dev);
-
 	/* Give the overlay scaler a chance to enable if it's on this pipe */
 	intel_crtc_dpms_overlay(intel_crtc, true);
 
+	intel_update_fbc(dev);
+
 	for_each_encoder_on_crtc(dev, crtc, encoder)
 		encoder->enable(encoder);
 }