watchdog: fix mtk_wdt.c RESET_CONTROLLER build error

Fix build error when CONFIG_RESET_CONTROLLER is not set by
selecting RESET_CONTROLLER.

ld: drivers/watchdog/mtk_wdt.o: in function `mtk_wdt_probe':
mtk_wdt.c:(.text+0x3ec): undefined reference to `devm_reset_controller_register'

Signed-off-by: Randy Dunlap <[email protected]>
Fixes: c254e103082b74e ("watchdog: mtk_wdt: mt8183: Add reset controller")
Cc: Wim Van Sebroeck <[email protected]>
Cc: Guenter Roeck <[email protected]>
Cc: Matthias Brugger <[email protected]>
Cc: [email protected]
Reviewed-by: Guenter Roeck <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Guenter Roeck <[email protected]>
Signed-off-by: Wim Van Sebroeck <[email protected]>
diff --git a/drivers/watchdog/Kconfig b/drivers/watchdog/Kconfig
index cec868f..c3c8e07 100644
--- a/drivers/watchdog/Kconfig
+++ b/drivers/watchdog/Kconfig
@@ -841,6 +841,7 @@
 	tristate "Mediatek SoCs watchdog support"
 	depends on ARCH_MEDIATEK || COMPILE_TEST
 	select WATCHDOG_CORE
+	select RESET_CONTROLLER
 	help
 	  Say Y here to include support for the watchdog timer
 	  in Mediatek SoCs.