ARM: 7265/1: restart: S3C24XX: use new restart hook

Hook these platforms restart code into the new restart hook rather
than using arch_reset().
And adds local header file, common.h in arch/arm/mach-s3c2410/ and
arch/arm/mach-s3c2440/ directories.

Cc: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
diff --git a/arch/arm/mach-s3c2410/s3c2410.c b/arch/arm/mach-s3c2410/s3c2410.c
index 3d7ebc5..489c826 100644
--- a/arch/arm/mach-s3c2410/s3c2410.c
+++ b/arch/arm/mach-s3c2410/s3c2410.c
@@ -42,6 +42,7 @@
 #include <plat/clock.h>
 #include <plat/pll.h>
 #include <plat/pm.h>
+#include <plat/watchdog-reset.h>
 
 #include <plat/gpio-core.h>
 #include <plat/gpio-cfg.h>
@@ -183,3 +184,15 @@
 	s3c2410_sysdev.cls = &s3c2410a_sysclass;
 	return s3c2410_init();
 }
+
+void s3c2410_restart(char mode, const char *cmd)
+{
+	if (mode == 's') {
+		soft_restart(0);
+	}
+
+	arch_wdt_reset();
+
+	/* we'll take a jump through zero as a poor second */
+	soft_restart(0);
+}