[WATCHDOG] Add AT91SAM9X watchdog

Add a driver for the watchdog timer embedded into AT91SAM9X chips.

Signed-off-by: Renaud Cerrato <r.cerrato@til-technologies.fr>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>

diff --git a/drivers/watchdog/Kconfig b/drivers/watchdog/Kconfig
index 37dc27c..6a711eb 100644
--- a/drivers/watchdog/Kconfig
+++ b/drivers/watchdog/Kconfig
@@ -66,6 +66,13 @@
 	  Watchdog timer embedded into AT91RM9200 chips. This will reboot your
 	  system when the timeout is reached.
 
+config AT91SAM9X_WATCHDOG
+	tristate "AT91SAM9X watchdog"
+	depends on WATCHDOG && (ARCH_AT91SAM9260 || ARCH_AT91SAM9261)
+	help
+	  Watchdog timer embedded into AT91SAM9X chips. This will reboot your
+	  system when the timeout is reached.
+
 config 21285_WATCHDOG
 	tristate "DC21285 watchdog"
 	depends on FOOTBRIDGE