driver: split off the helper to broadcast the NameOwnerChanged signal
driver: split off the helper to broadcast the NameOwnerChanged signal

We now have driver_name_owner_changed() that calls into notify_name_lost(),
notify_name_owner_changed() and notify_name_acquired().

Signed-off-by: Tom Gundersen <7c8224529a7c718e876cb2496c973509fde1e50e@jklm.no>

bus1/dbus-broker