Merge branch 'nfp-flower-loosen-L4-checks-and-add-extack-to-flower-offload'

Merge branch 'nfp-flower-loosen-L4-checks-and-add-extack-to-flower-offload'

Jakub Kicinski says:

====================
nfp: flower: loosen L4 checks and add extack to flower offload

Pieter says:

This set allows the offload of filters that make use of an unknown
ip protocol, given that layer 4 is being wildcarded. The set then
aims to make use of extack messaging for flower offloads. It adds
about 70 extack messages to the driver.
====================

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