ARM: SAMSUNG: Remove platform dependency from samsung.S

regs-serial.h only includes linux/serial_s3c.h. Include this
header directly in samsung.S to remove unnecessary platform
dependency.
Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: Tushar Behera <tushar.behera@linaro.org>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>

arch/arm/include/debug/samsung.S

@@ -9,7 +9,7 @@
  * published by the Free Software Foundation.
 */
 
-#include <plat/regs-serial.h>
+#include <linux/serial_s3c.h>
 
 /* The S5PV210/S5PC110 implementations are as belows. */