Disabling LSO from the adapter gives us huge performance boosts
on Windows. In our tests 2 VMs within the same hosts had transfer
speeds of 30 Mbit/s with this enabled, and 2Gbit/s with this disabled.
Pick-to: 5.15
Pick-to: 5.12
Change-Id: Id794e7559c9e9005043361289a3db246a8528dd4
Reviewed-by: Heikki Halmet <heikki.halmet@qt.io>
