DAHDI gets notified of changes to battery status and hence to red alarm
on an FXO channel when the status changes. It thus needs to get notified
about it on "startup".
This startup was initially span registration. However following the
separation between device registration and span assignment, the
notification was sent after device registration, whereas it was ignored
if span was not assigned. It happened to work in most cases due to
delays.
This fix moves the startup notifications of battery status to the new
hook that is run on span assignment.
Signed-off-by: Tzafrir Cohen <tzafrir.cohen@xorcom.com>
d4ac65d0c1