Gigabit ethernet driver for Alacritechs SLIC devices

[Lino Sanfilippo]

Hi,

this is a rework of the slicoss gigabit ethernet driver from Alacritech 
that is currently part of the staging area. The driver is supposed to 
support Mojave, Oasis and Kalahari cards, for both copper and fiber.

If this code is accepted the staging version can be removed (as Greg 
told me by email, he would do this himself so this is not part of these
patches).

The driver is tested on a SEN2104ET card (4 Port PCIe copper).

Regards,
Lino