[netdrvr] add 'uli526x' driver (a tulip clone)

We want to extract our LAN card driver from tulip core driver and
make a new file uli526x.c at tulip folder, because we have added
some ethtool interface support and non-eprom support in our driver
and may be other change in the futher.

If our controllers support are still contained in the tulip core
driver, I think it'll increase the complexity of maintenance, you
know, tulip core driver include several files and support so many
other controllers.  Furthermore, I tested the newest kernel 2.6.12
and I found the tulip driver can not work on our lan controller, and
I no time to debug it, so I aspired want to make a single uli526x.c
file just for our controllers.  Could you help us remove the ULi
m5261/m5263 lan controller support from tulip core driver and add
the new single uli526x.c file for us?

Signed-off-by: Peer Chen <Peer.Chen@uli.com.tw>
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>