watchdog: zx2967: add watchdog controller driver for ZTE's zx2967 family

This patch adds watchdog controller driver for ZTE's zx2967 family.

Signed-off-by: Baoyou Xie <baoyou.xie@linaro.org>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
diff --git a/drivers/watchdog/Kconfig b/drivers/watchdog/Kconfig
index 89b50f6..2d006d8 100644
--- a/drivers/watchdog/Kconfig
+++ b/drivers/watchdog/Kconfig
@@ -725,6 +725,16 @@
 	  To compile this driver as a module, choose M here: the
 	  module will be called aspeed_wdt.
 
+config ZX2967_WATCHDOG
+	tristate "ZTE zx2967 SoCs watchdog support"
+	depends on ARCH_ZX
+	select WATCHDOG_CORE
+	help
+	  Say Y here to include support for the watchdog timer
+	  in ZTE zx2967 SoCs.
+	  To compile this driver as a module, choose M here: the
+	  module will be called zx2967_wdt.
+
 # AVR32 Architecture
 
 config AT32AP700X_WDT