mbuf: extend flow director field
mbuf: extend flow director field

fdir field in rte_mbuf is extended to support flex bytes reported when fdir match.
8 flex bytes can be reported in maximum.
The reported flex bytes are part of flexible payload.

Signed-off-by: Jingjing Wu <64d28b617c3b4840f5ded1bfa611cba7fadfe5c7@intel.com>
Acked-by: Konstantin Ananyev <cbd5212b59ab42a210d72992d23a3aa17cfd3eaf@intel.com>

msune/dpdk,mixja/dpdk,john-mcnamara-intel/dpdk,john-mcnamara-intel/dpdk,john-mcnamara-intel/dpdk,msune/dpdk,tsphillips/dpdk-fork,msune/dpdk,john-mcnamara-intel/dpdk,mixja/dpdk,venkynv/dpdk-mirror,msune/dpdk,tsphillips/dpdk-fork,mixja/dpdk,mixja/dpdk,venkynv/dpdk-mirror,venkynv/dpdk-mirror,tsphillips/dpdk-fork,venkynv/dpdk-mirror,tsphillips/dpdk-fork