This fix the case when etherswitch is printing the information of port 0
vlan group (in port based vlan mode) with no member ports.
Add the ETHERSWITCH_VID_VALID support to ip17x driver.
Add the ETHERSWITCH_VID_VALID support to rt8366 driver.
arswitch doesn't need to be updated as it doesn't support vlans management
yet.
Approved by: adrian (mentor)