mx31/mx35/mx51/mx53/mx6: add watchdog

Use a common watchdog driver for all these cpus.

Signed-off-by: Troy Kisky <troy.kisky@boundarydevices.com>
Acked-by: Stefano Babic <sbabic@denx.de>
diff --git a/arch/arm/include/asm/arch-mx31/imx-regs.h b/arch/arm/include/asm/arch-mx31/imx-regs.h
index ae3658b..3f58318 100644
--- a/arch/arm/include/asm/arch-mx31/imx-regs.h
+++ b/arch/arm/include/asm/arch-mx31/imx-regs.h
@@ -68,17 +68,6 @@
 	u32 test;
 };
 
-/* Watchdog Timer (WDOG) registers */
-#define WDOG_ENABLE	(1 << 2)
-#define WDOG_WT_SHIFT	8
-#define WDOG_WDZST	(1 << 0)
-
-struct wdog_regs {
-	u16 wcr;	/* Control */
-	u16 wsr;	/* Service */
-	u16 wrsr;	/* Reset Status */
-};
-
 /* IIM Control Registers */
 struct iim_regs {
 	u32 iim_stat;
@@ -687,7 +676,7 @@
 
 #define ARM_PPMRR		0x40000015
 
-#define WDOG_BASE		0x53FDC000
+#define WDOG1_BASE_ADDR		0x53FDC000
 
 /*
  * GPIO