[PATCH] enp2611: use 'dev' in link status timer

We assign nds[i] to a local variable 'dev', which we never use
afterwards.  Use the local variable instead.

Signed-off-by: Lennert Buytenhek <buytenh@wantstofly.org>
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>