net/kni: set packet input port in Rx
net/kni: set packet input port in Rx

Store port_id in pmd_internals when eth kni device is created.
Then set packet port of rte_mbuf in function eth_kni_rx.

Cc: stable@dpdk.org

Signed-off-by: Jecky Pei <527d93f556b9c07ccff65fc6c0efb0ef6f9f1744@sonicwall.com>
Reviewed-by: Ferruh Yigit <ba8734c3c506d2e3557bd4ac8fdaccd25bdb9aa7@intel.com>

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