watchdog: sp805_wdt depends also on ARM64

Add sp805_wdt depends on ARM64.
Signed-off-by: NNaresh Bhat <naresh.bhat@linaro.org>
Acked-by: NViresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: NWim Van Sebroeck <wim@iguana.be>

drivers/watchdog/Kconfig

@@ -117,7 +117,7 @@ config WM8350_WATCHDOG
 
 config ARM_SP805_WATCHDOG
 	tristate "ARM SP805 Watchdog"
-	depends on ARM && ARM_AMBA
+	depends on (ARM || ARM64) && ARM_AMBA
 	select WATCHDOG_CORE
 	help
 	  ARM Primecell SP805 Watchdog timer. This will reboot your system when