MPRQ is silently turned off in case there is not enough
Rx queues configured. Improve the logging to show a
warning in this case to notify a user about the Rx burst
function selected.
Fixes: 7d6bf6b866b8 ("net/mlx5: add Multi-Packet Rx support")
Cc: stable@dpdk.org
Signed-off-by: Alexander Kozyrev <akozyrev@mellanox.com>
Acked-by: Viacheslav Ovsiienko <viacheslavo@mellanox.com>