This is prework for data path enabling for secondary process.
To prevent pcap handler opened by one process be overwritten by
another process, each process should have their private copy,
`rte_eth_dev->process_private` is exactly what we needed.
Signed-off-by: Qi Zhang <qi.z.zhang@intel.com>
Acked-by: Ferruh Yigit <ferruh.yigit@intel.com>
0ecfb6c04d