net/mlx5: fix meter flow counter translation

net/mlx5: fix meter flow counter translation

When a flow rule uses a meter without any modify packet action,
there will be an internal drop flow with meter counter created,
matching the same 5-tuple as the original flow.

In this case, the meter flow count action is wrongly reused as the
original flow counter, leading to wrong flow statistics.

Add a check in the count action translation to detect the meter case
and use the meter drop dedicated counter in the meter 5-tuple flow
only.

Fixes: f3191849f2c2 ("net/mlx5: support flow count action handle")
Cc: stable@dpdk.org
Signed-off-by: Shun Hao <shunh@nvidia.com>
Acked-by: Matan Azrad <matan@nvidia.com>