dmaengine: hsu: set maximum allowed segment size for DMA

This tells, for example, IOMMU what the maximum size of a segment
the DMA controller can send.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>

drivers/dma/hsu/hsu.c

@@ -417,6 +417,8 @@ int hsu_dma_probe(struct hsu_dma_chip *chip)
 
 	hsu->dma.dev = chip->dev;
 
+	dma_set_max_seg_size(hsu->dma.dev, HSU_CH_DxTSR_MASK);
+
 	ret = dma_async_device_register(&hsu->dma);
 	if (ret)
 		return ret;