SiS 190 NIC driver

[Alexander Pohoyda]

Hello!

Attached is a driver for the SiS 190 NIC found in some Shuttle XPS boxes.  I 
have developed it based on the code of SiS 900 BSD driver using hints and 
enums from Linux and Solaris drivers.

It is developed and tested to be working on FreeBSD 5.4 amd64.  Please bear in 
mind that this is my first driver ever.  The driver surely needs some 
corrections and more work (collision handling, polling mode, etc) but I'm not 
able to do this right now becasue of the missing documentation.

Please review the code and add it into the source with any corrections you 
dimi necessary.

Thank you!

With best regards,
Alexander Pohoyda