wr_mon: add info on vlan and state name
the following changes to the wr_mon would be more than useful for
users:
1. for each port, its PTP state is give by number, it is very
inconvenient but the state information is very useful, name or
abbreviation instead of the number would be nice
2. information about VLAN on which PPSi works, per port, would be very
useful to confirm current configuration. currently, there is no (except
tcpdump) way to find out whether the VLAN config for PPSi is OK, and
misconfiguration is very easy