rtc: pcf2127: watchdog: handle nowayout feature

Driver does not use module parameter for nowayout, so it need to
statically initialize status variable of the watchdog_device based
on CONFIG_WATCHDOG_NOWAYOUT.

Signed-off-by: Bruno Thomsen <bruno.thomsen@gmail.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Acked-by: Guenter Roeck <linux@roeck-us.net>
Link: https://lore.kernel.org/r/20200604162602.76524-1-bruno.thomsen@gmail.com