ARM: S3C64XX: Add header file protection macros in pm-core.h

Adds header file protection macros.
Signed-off-by: NSachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: NKukjin Kim <kgene.kim@samsung.com>

arch/arm/mach-s3c64xx/include/mach/pm-core.h

@@ -12,6 +12,9 @@
  * published by the Free Software Foundation.
  */
 
+#ifndef __MACH_S3C64XX_PM_CORE_H
+#define __MACH_S3C64XX_PM_CORE_H __FILE__
+
 #include <mach/regs-gpio.h>
 
 static inline void s3c_pm_debug_init_uart(void)
@@ -113,3 +116,4 @@ static inline void samsung_pm_saved_gpios(void)
 
 	__raw_writel(S3C64XX_SLPEN_USE_xSLP, S3C64XX_SLPEN);
 }
+#endif /* __MACH_S3C64XX_PM_CORE_H */