watchdog: loongson1: Add Loongson1 SoC watchdog driver

Add watchdog timer specific driver for Loongson1 SoC.

Signed-off-by: Yang Ling <gnaygnil@gmail.com>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
diff --git a/drivers/watchdog/Kconfig b/drivers/watchdog/Kconfig
index a05afcb..f1de121 100644
--- a/drivers/watchdog/Kconfig
+++ b/drivers/watchdog/Kconfig
@@ -1514,6 +1514,13 @@
 	help
 	  Hardware driver for the Lantiq SoC Watchdog Timer.
 
+config LOONGSON1_WDT
+	tristate "Loongson1 SoC hardware watchdog"
+	depends on MACH_LOONGSON32
+	select WATCHDOG_CORE
+	help
+	  Hardware driver for the Loongson1 SoC Watchdog Timer.
+
 config RALINK_WDT
 	tristate "Ralink SoC watchdog"
 	select WATCHDOG_CORE