watchdog: kconfig: Enable designware for rk3399

Enable designware watchdog driver for rk3399 if WDT defined.

Cc: Marek Vasut <marex@denx.de>
Signed-off-by: NJagan Teki <jagan@amarulasolutions.com>
Reviewed-by: NKever Yang <kever.yang@rock-chips.com>

drivers/watchdog/Kconfig

@@ -49,6 +49,7 @@ config ULP_WATCHDOG
 config DESIGNWARE_WATCHDOG
 	bool "Designware watchdog timer support"
 	select HW_WATCHDOG if !WDT
+	default y if WDT && ROCKCHIP_RK3399
 	help
 	  Enable this to support Designware Watchdog Timer IP, present e.g.
 	  on Altera SoCFPGA SoCs.