watchdog: Add Cadence WDT driver

Add Cadence WDT driver. This is used by Xilinx Zynq.

Signed-off-by: Harini Katakam <harinik@xilinx.com>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
diff --git a/drivers/watchdog/Kconfig b/drivers/watchdog/Kconfig
index e3d5bf0..786f8c8 100644
--- a/drivers/watchdog/Kconfig
+++ b/drivers/watchdog/Kconfig
@@ -157,6 +157,14 @@
 	  Watchdog timer embedded into AT91SAM9X and AT91CAP9 chips. This will
 	  reboot your system when the timeout is reached.
 
+config CADENCE_WATCHDOG
+	tristate "Cadence Watchdog Timer"
+	depends on ARM
+	select WATCHDOG_CORE
+	help
+	  Say Y here if you want to include support for the watchdog
+	  timer in the Xilinx Zynq.
+
 config 21285_WATCHDOG
 	tristate "DC21285 watchdog"
 	depends on FOOTBRIDGE