Merge branch 'sfc-tc-decap-support'

Edward Cree says:

====================
sfc: support TC decap rules

This series adds support for offloading tunnel decapsulation TC rules to
 ef100 NICs, allowing matching encapsulated packets to be decapsulated in
 hardware and redirected to VFs.
For now an encap match must be on precisely the following fields:
 ethertype (IPv4 or IPv6), source IP, destination IP, ipproto UDP,
 UDP destination port.  This simplifies checking for overlaps in the
 driver; the hardware supports a wider range of match fields which
 future driver work may expose.
====================

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