media: v4l: omap_vout: vrfb: Use the wrapper for prep_interleaved_dma()

Instead of directly accessing to dmadev->device_prep_interleaved_dma() use
the dmaengine_prep_interleaved_dma() wrapper instead.
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>

drivers/media/platform/omap/omap_vout_vrfb.c

@@ -271,7 +271,7 @@ int omap_vout_prepare_vrfb(struct omap_vout_device *vout,
 	xt->dst_sgl = true;
 	xt->dst_inc = true;
 
-	tx = dmadev->device_prep_interleaved_dma(chan, xt, flags);
+	tx = dmaengine_prep_interleaved_dma(chan, xt, flags);
 	if (tx == NULL) {
 		pr_err("%s: DMA interleaved prep error\n", __func__);
 		return -EINVAL;