ARM: restart: plat-samsung: remove plat/reset.h and s5p_reset_hook

Now that s5p_reset_hook is unused, we can get rid of plat/reset.h and
the s5p_reset_hook code in plat/system-reset.h.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

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

-/* linux/arch/arm/plat-samsung/include/plat/reset.h
- *
- * Copyright (c) 2010 Samsung Electronics Co., Ltd.
- *		http://www.samsung.com/
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
-*/
-
-#ifndef __PLAT_SAMSUNG_RESET_H
-#define __PLAT_SAMSUNG_RESET_H __FILE__
-
-extern void (*s5p_reset_hook)(void);
-
-#endif /* __PLAT_SAMSUNG_RESET_H */

arch/arm/plat-samsung/include/plat/system-reset.h

@@ -14,18 +14,7 @@
 
 #include <plat/watchdog-reset.h>
 
-void (*s5p_reset_hook)(void);
-
 static void arch_reset(char mode, const char *cmd)
 {
-	/* SWRESET support in s5p_reset_hook() */
-
-	if (s5p_reset_hook)
-		s5p_reset_hook();
-
-	/* Perform reset using Watchdog reset
-	 * if there is no s5p_reset_hook()
-	 */
-
 	arch_wdt_reset();
 }