drm/i915: Pass intel_crtc to intel_crtc_active()

Unify our approach to things by passing around intel_crtc instead of
drm_crtc.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1477946245-14134-4-git-send-email-ville.syrjala@linux.intel.com
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
diff --git a/drivers/gpu/drm/i915/intel_fbc.c b/drivers/gpu/drm/i915/intel_fbc.c
index cbe2ebd..e230d48 100644
--- a/drivers/gpu/drm/i915/intel_fbc.c
+++ b/drivers/gpu/drm/i915/intel_fbc.c
@@ -1306,7 +1306,7 @@ void intel_fbc_init_pipe_state(struct drm_i915_private *dev_priv)
 		return;
 
 	for_each_intel_crtc(&dev_priv->drm, crtc)
-		if (intel_crtc_active(&crtc->base) &&
+		if (intel_crtc_active(crtc) &&
 		    to_intel_plane_state(crtc->base.primary->state)->base.visible)
 			dev_priv->fbc.visible_pipes_mask |= (1 << crtc->pipe);
 }