- restore newer code for vf, i350, i210, i211
 - restore dmac init code for i354 and i350
 - restore WUC/WUFC update
 - check for igb mac type before attempting trying to assert
   a media changed event.
 - handle link events for igb(4) and em(4) devices differently
   and appropriately for their respective model types.

Submitted by:	Matt Macy <mmacy@mattmacy.io>
Sponsored by:	Limelight Networks