e1000e: LED settings in EEPROM ignored on 82571 and 82572

Do not override the customizable LED configuration set in the EEPROM.

Signed-off-by: Bruce Allan <bruce.w.allan@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>