net/mlx5e: Fix tc acts array not to be dependent on enum order

The tc acts array should not be dependent on kernel internal
flow action id enum. Fix the array initialization.

Fixes: fad54790

 ("net/mlx5e: Add tc action infrastructure")
Signed-off-by: Roi Dayan <roid@nvidia.com>
Reviewed-by: Maor Dickman <maord@nvidia.com>
Reviewed-by: Tariq Toukan <tariqt@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>