Merge branch 'sfc-tso-v2'

Edward Cree says:

====================
sfc: Firmware-Assisted TSO version 2

The firmware on 8000 series SFC NICs supports a new TSO API ("FATSOv2"), and
 7000 series NICs will also support this in an imminent release.  This series
 adds driver support for this TSO implementation.
The series also removes SWTSO, as it's now equivalent to GSO.  This does not
 actually remove very much code, because SWTSO was grotesquely intertwingled
 with FATSOv1, which will also be removed once 7000 series supports FATSOv2.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>