The b44 Enet control disable bit may take longer to clear on some
systems, so the loop count is increased with this patch. Functionality
is not compromised, but a debug message can be seen when the bit is not
cleared within the count value.
Thanks to Vasileios Lourdas who reported the problem.

Signed-off by: Gary Zambrano <zambrano@broadcom.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>