Bridge filtering database update - 8

Added #constraint #status handler for #bridge #VLAN #learning-constraint configuration in ethernet module. The learning-constraint configuration for a VLAN indicates the #filtering-database ( #FDB ) to be used for #mac-learning and whether the database is shared with other VLANs. On activating the learning-constraint corresponding FDB is also activated and starts functioning for the related VLANs.

#Ethernet update 78 ...
[commit e8cf1e8fcbbb10dda82273dc01cb643b91b43f6c]