dmfix - DAVICOM Fast Ethernet killer

Copyright (c) 1999,2000, James McKenzie.
                     All rights reserved
Copyright (c) 1999,2000, Christopher Lightfoot.
                      All rights reserved

By using this file, you agree to the terms and conditions set
forth in the LICENCE file which can be found at the top level of
the rpld distribution.

This code fixes a problem with the DAVICOM DM9102 Fast ethernet chip and
boot ROM. The chip is left scribbling over memory at 0x96000 when the
ROM transfers controll to the RPL image. This code hunts out the DM9102
and resets it. Once the chip is reset it transfers control to 9020:0000,
which is typically the linux 2ndary boot loader.

