[PATCH] e1000: fix to set the new max frame size before resetting the adapter

This bugfix makes sure that the driver data reflects the full new situation
before the adapter is reinitialized.

Signed-off-by: Bruce Allan <bruce.w.allan@intel.com>
Signed-off-by: Auke Kok <auke-jan.h.kok@intel.com>
Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>