For 82574 and 82583 devices, resolve an intermittent link issue where
the link negotiates to 100Mbps rather than 1Gbps when powering off the
PHY and powering on the PHY after several seconds.
Signed-off-by: NMatthew Vick <matthew.vick@intel.com>
Tested-by: NAaron Brown <aaron.f.brown@intel.com>
Signed-off-by: NJeff Kirsher <jeffrey.t.kirsher@intel.com>