This patch enables software (and phy device) transmit time stamping.
Tested on an old PIII laptop with built in NIC.
Signed-off-by: NRichard Cochran <richardcochran@gmail.com>
Tested-by: NAaron Brown <aaron.f.brown@intel.com>
Signed-off-by: NJeff Kirsher <jeffrey.t.kirsher@intel.com>