idpf: add flow steering support

Use the new virtchnl2 OP codes to communicate with the Control Plane to
add flow steering filters. We add the basic functionality for add/delete
with TCP/UDP IPv4 only. Support for other OP codes and protocols will be
added later.

Standard 'ethtool -N|--config-ntuple' should be used, for example:

    # ethtool -N ens801f0d1 flow-type tcp4 src-ip 10.0.0.1 action 6

to route all IPv4/TCP traffic from IP 10.0.0.1 to queue 6.

Reviewed-by: Sridhar Samudrala <sridhar.samudrala@intel.com>
Signed-off-by: Ahmed Zaki <ahmed.zaki@intel.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>