net/i40e: fix statistics inconsistency

net/i40e: fix statistics inconsistency

While calculating the input packet count per port, discarded packets
should be reduced, right now only PF VSI discarded packets are reduced.
But while calculating the input byte count per port, Rx byte count is
used, which should take all discarded packets into account, including
VF VSI ones.
This will cause inconsistency in stat counters in some cases.

This patch would take all VSI stats as packet and byte count to address
the issue.

Fixes: 763de290cbd1 ("net/i40e: fix packet count for PF")
Cc: stable@dpdk.org
Signed-off-by: Xiaoyun Li <xiaoyun.li@intel.com>
Acked-by: Qi Zhang <qi.z.zhang@intel.com>