linux-imx

net/mlx5: Add flow context for flow tag

Refactor the flow data structures, add new flow_context and move
flow_tag into it, as flow_tag doesn't belong to the rule action.

Signed-off-by: Jianbo Liu <jianbol@mellanox.com>
Reviewed-by: Mark Bloch <markb@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>