ARM: SAMSUNG: Guard against multiple inclusion of plat/dma.h

Otherwise it'll generate errors if included twice.
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>

arch/arm/plat-samsung/include/plat/dma.h

@@ -10,6 +10,9 @@
  * published by the Free Software Foundation.
 */
 
+#ifndef __PLAT_DMA_H
+#define __PLAT_DMA_H
+
 #include <linux/dma-mapping.h>
 
 enum s3c2410_dma_buffresult {
@@ -122,5 +125,6 @@ extern int s3c2410_dma_getposition(enum dma_ch channel,
 extern int s3c2410_dma_set_opfn(enum dma_ch, s3c2410_dma_opfn_t rtn);
 extern int s3c2410_dma_set_buffdone_fn(enum dma_ch, s3c2410_dma_cbfn_t rtn);
 
-
 #include <plat/dma-ops.h>
+
+#endif