ASoC: SAMSUNG: Clean-up header includes

This patch remove including unnecessary/duplicated headers which relative
with Samsung SoCs.

Signed-off-by: Seungwhan Youn <sw.youn@samsung.com>
Acked-by: Jassi Brar <jassi.brar@samsung.com>
Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
diff --git a/sound/soc/samsung/pcm.c b/sound/soc/samsung/pcm.c
index 091db5d..38aac7d 100644
--- a/sound/soc/samsung/pcm.c
+++ b/sound/soc/samsung/pcm.c
@@ -11,20 +11,11 @@
  * published by the Free Software Foundation.
  */
 
-#include <linux/init.h>
-#include <linux/module.h>
-#include <linux/device.h>
-#include <linux/delay.h>
 #include <linux/clk.h>
-#include <linux/kernel.h>
-#include <linux/gpio.h>
 #include <linux/io.h>
 
-#include <sound/core.h>
-#include <sound/pcm.h>
-#include <sound/pcm_params.h>
-#include <sound/initval.h>
 #include <sound/soc.h>
+#include <sound/pcm_params.h>
 
 #include <plat/audio.h>
 #include <plat/dma.h>