[PATCH] netdrv: fix b44 loading after bcm4400

[PATCH] netdrv: fix b44 loading after bcm4400

From Pekka Pietikain :

This patch makes the b44-after-bcm4400 scenario work for me. What
was happening is that the broadcom driver sets a "power off MAC"
bit, and we didn't remove that when initializing the chip. Also
added some (a bit ugly, I know  ) logic to clear up the address
filter stuff, which is what recent broadcom drivers do...

This fix was merged in 2.6 late in 2004, but did not receive any
echo for 2.4. At least it made the b44 driver usable on an Asus
Pundit for me.

Signed-off-by: Willy Tarreau <willy@w.ods.org>
- Willy