ASoC: pxa: Remove duplicate inclusion of dmaengine.h

dmaengine.h header file was included twice.
Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: Mark Brown <broonie@linaro.org>

sound/soc/pxa/mmp-pcm.c

@@ -17,7 +17,6 @@
 #include <linux/dmaengine.h>
 #include <linux/platform_data/dma-mmp_tdma.h>
 #include <linux/platform_data/mmp_audio.h>
-#include <linux/dmaengine.h>
 
 #include <sound/pxa2xx-lib.h>
 #include <sound/core.h>