net/mlx5: fix packet type offload for tunnels

net/mlx5: fix packet type offload for tunnels

There are dedicated QP attributes, tunnel offload flag and mask, which
must be configured in order to allow part of the HW tunnel offloads.

So, if a QP is pointed by a tunnel flow, the above QP attributes
should be configured.

The mask configuration is wrongly only performed if an internal RSS was
configured by the user, while there is no reason to condition the
tunnel offloads in RSS configurations.

Consequently, some of the tunnel offloads was not performed by the HW
when a tunnel flow was configured, for example, the packet tunnel
types was not reported to the user.

Replace the internal RSS condition with the tunnel flow condition.

Fixes: df6afd377ace ("net/mlx5: remove useless arguments in hrxq API")

Signed-off-by: Matan Azrad <matan@mellanox.com>