drm/rcar-du: use drm_crtc_handle_vblank()

Remove legacy usage of drm_handle_vblank()
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/1467677092-5089-5-git-send-email-gustavo@padovan.org

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

@@ -552,7 +552,7 @@ static irqreturn_t rcar_du_crtc_irq(int irq, void *arg)
 	rcar_du_crtc_write(rcrtc, DSRCR, status & DSRCR_MASK);
 
 	if (status & DSSR_FRM) {
-		drm_handle_vblank(rcrtc->crtc.dev, rcrtc->index);
+		drm_crtc_handle_vblank(&rcrtc->crtc);
 		rcar_du_crtc_finish_page_flip(rcrtc);
 		ret = IRQ_HANDLED;
 	}