- Remove MIIF_NOISOLATE; there's generally no reason to let gentbi(4)   set this flag and it was more or less just copied and pasted from   another FreeBSD driver while porting this driver from NetBSD, whose   gentbi(4) doesn't set MIIF_NOISOLATE either. - Fix spelling in a comment.
- Remove MIIF_NOISOLATE; there's generally no reason to let gentbi(4)
  set this flag and it was more or less just copied and pasted from
  another FreeBSD driver while porting this driver from NetBSD, whose
  gentbi(4) doesn't set MIIF_NOISOLATE either.
- Fix spelling in a comment.

OK'ed by:	yongari
MFC after:	3 months

jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase