ASoC: ti: sdma-pcm: Add back the flags parameter for non standard dma names

When non standard names are used it is possible that one of the directions
are not provided, thus the flags needs to be present to tell the core that
we have half duplex setup.

Fixes: 642aafea ("ASoC: ti: remove compat dma probing")
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Link: https://lore.kernel.org/r/20191028115207.5142-1-peter.ujfalusi@ti.comSigned-off-by: Mark Brown <broonie@kernel.org>

sound/soc/ti/sdma-pcm.c

@@ -62,7 +62,7 @@ int sdma_pcm_platform_register(struct device *dev,
 	config->chan_names[0] = txdmachan;
 	config->chan_names[1] = rxdmachan;
 
-	return devm_snd_dmaengine_pcm_register(dev, config, 0);
+	return devm_snd_dmaengine_pcm_register(dev, config, flags);
 }
 EXPORT_SYMBOL_GPL(sdma_pcm_platform_register);