drm/rcar-du: use drm_crtc_send_vblank_event()

Replace the legacy drm_send_vblank_event() with the new helper function.
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/1460656118-16766-9-git-send-email-gustavo@padovan.org

drivers/gpu/drm/rcar-du/rcar_du_crtc.c

@@ -314,7 +314,7 @@ static void rcar_du_crtc_finish_page_flip(struct rcar_du_crtc *rcrtc)
 		return;
 
 	spin_lock_irqsave(&dev->event_lock, flags);
-	drm_send_vblank_event(dev, rcrtc->index, event);
+	drm_crtc_send_vblank_event(&rcrtc->crtc, event);
 	wake_up(&rcrtc->flip_wait);
 	spin_unlock_irqrestore(&dev->event_lock, flags);