ASoC: atmel-pcm: use generic dmaengine framework

Align atmel pcm to use ASoC generic dmaengine framework

DMA is fully device tree based

Signed-off-by: Bo Shen <voice.shen@atmel.com>
Reviewed-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Mark Brown <broonie@linaro.org>
diff --git a/sound/soc/atmel/Kconfig b/sound/soc/atmel/Kconfig
index 3fdd87f..1c0b185 100644
--- a/sound/soc/atmel/Kconfig
+++ b/sound/soc/atmel/Kconfig
@@ -13,6 +13,7 @@
 config SND_ATMEL_SOC_DMA
 	tristate
 	depends on SND_ATMEL_SOC
+	select SND_SOC_GENERIC_DMAENGINE_PCM
 
 config SND_ATMEL_SOC_SSC
 	tristate