Bridge port update - 2 & Ethernet phy update - 6

Added bridge #port #type check and #interface #index check in port activation routine on ethernet module. Removed unwanted changes from #ethernet #phy register / de-register routines. Added #chassis support for ethernet phy framework.

Ethernet update 48 ...
[commit fdf1f394184a465a6382bb45229c88671d716c44]