ARM: SAMSUNG: Remove unused plat/regs-watchdog.h header

Since there are no remaining users of this header, it can be safely
dropped.
Signed-off-by: Tomasz Figa <tomasz.figa@gmail.com>
Tested-by: Sylwester Nawrocki <sylvester.nawrocki@gmail.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>

arch/arm/plat-samsung/include/plat/regs-watchdog.h

-/* arch/arm/mach-s3c2410/include/mach/regs-watchdog.h
- *
- * Copyright (c) 2003 Simtec Electronics <linux@simtec.co.uk>
- *		      http://www.simtec.co.uk/products/SWLINUX/
- *
- * 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.
- *
- * S3C2410 Watchdog timer control
-*/
-
-
-#ifndef __ASM_ARCH_REGS_WATCHDOG_H
-#define __ASM_ARCH_REGS_WATCHDOG_H
-
-#define S3C_WDOGREG(x) ((x) + S3C_VA_WATCHDOG)
-
-#define S3C2410_WTCON	   S3C_WDOGREG(0x00)
-#define S3C2410_WTDAT	   S3C_WDOGREG(0x04)
-#define S3C2410_WTCNT	   S3C_WDOGREG(0x08)
-
-/* the watchdog can either generate a reset pulse, or an
- * interrupt.
- */
-
-#define S3C2410_WTCON_RSTEN   (0x01)
-#define S3C2410_WTCON_INTEN   (1<<2)
-#define S3C2410_WTCON_ENABLE  (1<<5)
-
-#define S3C2410_WTCON_DIV16   (0<<3)
-#define S3C2410_WTCON_DIV32   (1<<3)
-#define S3C2410_WTCON_DIV64   (2<<3)
-#define S3C2410_WTCON_DIV128  (3<<3)
-
-#define S3C2410_WTCON_PRESCALE(x) ((x) << 8)
-#define S3C2410_WTCON_PRESCALE_MASK (0xff00)
-
-#endif /* __ASM_ARCH_REGS_WATCHDOG_H */
-
-