[PATCH] net/mlx5: relax hws meter validation

[Matan Azrad]

From: Alexander Kozyrev
> The policies array is not required for the new METER_MARK action.
> It is only required for the old METER action implementation.
> Furthermore, the profiles array is optional for the METER_MARK action since
> a profile can be found using the rte_mtr_meter_profile_get().
> Do not enforce the preallocation of meter profiles and policies.
> 
> Signed-off-by: Alexander Kozyrev <akozyrev at nvidia.com>
Acked-by: Matan Azrad <matan at nvidia.com>