net/mlx5: Fix matching on inner TTC

The cited commits didn't use proper matching on inner TTC
as a result distribution of encapsulated packets wasn't symmetric
between the physical ports.

Fixes: 4c71ce50 ("net/mlx5: Support partial TTC rules")
Fixes: 8e25a2bc ("net/mlx5: Lag, add support to create TTC tables for LAG port selection")
Signed-off-by: Mark Bloch <mbloch@nvidia.com>
Reviewed-by: Maor Gottlieb <maorg@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>