There are time that programs need to be notified of events from
subsystems that are not enumerated in the .json definition, e.g. QEMU
guest agent by default requires /dev/virtio-ports/org.qemu.guest_agent.0
which is a symlink to /dev/vportMpN from virtio-ports subsystem.
Signed-off-by: Yousong Zhou <yszhou4tech@gmail.com>
SVN-Revision: 48799