Add USR 997902 Gig-Ethernet card support if_re

All that is needed for USR 997902 Gig-Ethernet card is to add the device ID.  
Would a commiter please take a look at kern/94082 and commit it?
http://www.freebsd.org/cgi/query-pr.cgi?pr=kern/94082

Then a MFC to RELENG_6 and RELENG_6_2 would be appreciated if possible.

Thanks,
-- 
Anish Mistry