ASoC: dmaengine_pcm: set MODULE_LICENSE

Signed-off-by: Lothar Waßmann <LW@KARO-electronics.de>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>

sound/soc/soc-dmaengine-pcm.c

@@ -317,3 +317,5 @@ int snd_dmaengine_pcm_close(struct snd_pcm_substream *substream)
 	return 0;
 }
 EXPORT_SYMBOL_GPL(snd_dmaengine_pcm_close);
+
+MODULE_LICENSE("GPL");