common/iavf: add protocol header for IP fragment
common/iavf: add protocol header for IP fragment

Add new virtchnl protocol header type and fields for IP fragment packets
to support RSS hash and FDIR.

Signed-off-by: Ting Xu <a22634c400745d700c462bf72fa5f6133709058f@intel.com>
Signed-off-by: Jeff Guo <62aa901f8680899d1e8b3d9b45cf4843c2976e1c@intel.com>
Acked-by: Qi Zhang <9e9e58ffa71a29bb7b87766b362515be648fcbe0@intel.com>

john-mcnamara-intel/dpdk,john-mcnamara-intel/dpdk,john-mcnamara-intel/dpdk,john-mcnamara-intel/dpdk