watchdog: sp5100-tco: Abort if watchdog is disabled by hardware
If the watchdog control register indicates that the watchdog hardware is disabled even after we tried to enable it, there is no point to instantiate the driver. Cc: Zoltán Böszörményi <zboszor@pr.hu> Signed-off-by:Guenter Roeck <linux@roeck-us.net> Signed-off-by:
Wim Van Sebroeck <wim@iguana.be>
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