watchdog: at91rm9200: add DT support

Add DT support for at91rm9200_wdt.

Signed-off-by: Joachim Eastwood <manabian@gmail.com>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
diff --git a/drivers/watchdog/Kconfig b/drivers/watchdog/Kconfig
index 83ac1f7..0374e0e 100644
--- a/drivers/watchdog/Kconfig
+++ b/drivers/watchdog/Kconfig
@@ -117,7 +117,7 @@
 
 config AT91RM9200_WATCHDOG
 	tristate "AT91RM9200 watchdog"
-	depends on ARCH_AT91RM9200
+	depends on ARCH_AT91
 	help
 	  Watchdog timer embedded into AT91RM9200 chips. This will reboot your
 	  system when the timeout is reached.