Add the SPDX-Lincense-Identifier to the Intel wired Ethernet *.rst
kernel documentation.
Signed-off-by: NJeff Kirsher <jeffrey.t.kirsher@intel.com>
Tested-by: NAndrew Bowers <andrewx.bowers@intel.com>
Tested-by: NAaron Brown <aaron.f.brown@intel.com>