[PATCH] b44: fix laptop carrier detect

On my laptop, the b44 device is created and the carrier state defaults
to ON when created by alloc_etherdev. This means tools like NetworkManager
see the carrier as On and try and bring the device up.  The correct thing
to do is mark the carrier as Off when device is created.

Signed-off-by: Stephen Hemminger <shemminger@osdl.org>
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>