igb: add support for 82576 mezzanine card

This patch adds support for a new 82576 mezzanine adapter.

Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 files changed