ASoC: imx-pcm-dma: Use dmaengine PCM helper functions

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Tested-by: Shawn Guo <shawn.guo@linaro.org>
Acked-by: Vinod Koul <vinod.koul@linux.intel.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
diff --git a/sound/soc/imx/Kconfig b/sound/soc/imx/Kconfig
index e89139f..192861c 100644
--- a/sound/soc/imx/Kconfig
+++ b/sound/soc/imx/Kconfig
@@ -14,6 +14,7 @@
 	tristate
 
 config SND_MXC_SOC_MX2
+	select SND_SOC_DMAENGINE_PCM
 	tristate
 
 config SND_MXC_SOC_WM1133_EV1