Add tc-flower support for VF port representor devices.

Implement ndo_setup_tc callback for TC HW offload on VF port representors
devices. Implemented both methods: add and delete tc-flower flows.

Mark NETIF_F_HW_TC bit in net device's feature set to enable offload TC
infrastructure for port representor.

Implement TC filters replay function required to restore filters settings
while switchdev configuration is rebuilt.
Signed-off-by: Michal Swiatkowski <michal.swiatkowski@intel.com>
Signed-off-by: Wojciech Drewek <wojciech.drewek@intel.com>
Tested-by: Sandeep Penigalapati <sandeep.penigalapati@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>