watchdog: stmp3xxx: Stop the watchdog on system halt
This allows the system to actually halt even if userspace forgot to disable the watchdog first. Old behaviour was that the watchdog forced the system to boot again. Signed-off-by: NHarald Geyer <harald@ccbib.org> Signed-off-by: NGuenter Roeck <linux@roeck-us.net> Signed-off-by: NWim Van Sebroeck <wim@iguana.be>
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