wdog_notifier() will be called in _assert to keep the crash scene
as mush as possible, which is useful for debug.
But once disable the watchdog, the hardware watchdog can not reboot
the system too. If a crash happened in the _assert (e.g. the tcb sp
has been corrupted, system will crash again in tack stack dump),
system will crashing forever and can not reboot.
So add a config to disable this feature by default and can be enable
if anyone need it.
Signed-off-by: Bowen Wang <wangbowen6@xiaomi.com>
835a2a8801