Bridge port update - 4

Re-sequencing #bridge #port #logical-interface #attach / #detach operations with respect to bridge #port #activation in ethernet module. These changes will try to attach with the logical interface when port is getting activated. On removing the port from bridge component the logical interface is set to detach from the bridge port.

#Ethernet update 59 ...
[commit bd0487480e648ef0283836ce955eae6280f56a29]