This adds VLAN support to the 3c59x/90x series hardware.

Stefan de Konink ported this code from the 2.4 VLAN patches and tested it
extensively. I cleaned up the ifdefs and fixed a problem with bracketing
that made older cards fail.

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Developer's Certificate of Origin 1.0

By making a contribution to this project, I certify that:

(a) The contribution was created in whole or in part by me and I have the
right to submit it under the open source license indicated in the file; or

(b) The contribution is based upon previous work that, to the best of my
knowledge, is covered under an appropriate open source license and I have
the right under that license to submit that work with modifications,
whether created in whole or in part by me, under the same open source
license (unless I am permitted to submit under a different license), as
indicated in the file; or

(c) The contribution was provided directly to me by some other person who
certified (a), (b) or (c) and I have not modified it.

I, Stefan de Konink, certify that:
 The contribution is based upon previous work that, again is based on GPL
code and I have the right under that license to submit that work with
modifications, whether created in whole or in part by me, under the same
open source license.

I, Alan Cox, certify likewise.
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>