ASoC: ti: davinci-mcasp: Use dma_request_chan() directly for channel request

dma_request_slave_channel_reason() is:
#define dma_request_slave_channel_reason(dev, name) \
	dma_request_chan(dev, name)
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Link: https://lore.kernel.org/r/20191113095445.3211-3-peter.ujfalusi@ti.comSigned-off-by: Mark Brown <broonie@kernel.org>

sound/soc/ti/davinci-mcasp.c

@@ -1867,7 +1867,7 @@ static int davinci_mcasp_get_dma_type(struct davinci_mcasp *mcasp)
 		return PCM_EDMA;
 
 	tmp = mcasp->dma_data[SNDRV_PCM_STREAM_PLAYBACK].filter_data;
-	chan = dma_request_slave_channel_reason(mcasp->dev, tmp);
+	chan = dma_request_chan(mcasp->dev, tmp);
 	if (IS_ERR(chan)) {
 		if (PTR_ERR(chan) != -EPROBE_DEFER)
 			dev_err(mcasp->dev,