Merge branch 'ethtool-nfc-ipv6'

Edward Cree says:

====================
IPv6 NFC

This series adds support for steering IPv6 flows using the ethtool NFC
 interface, and implements it for sfc devices.
Tested using an in-development patch to the ethtool utility.
====================

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