net/mlx5: HWS, simplify allocations as we support only FDB

net/mlx5: HWS, simplify allocations as we support only FDB

In pools, STCs and actions: no need to allocate array for various
table types, as HWS is used to manage only FDB flow tables.

Signed-off-by: Yevgeny Kliteynik <kliteyn@nvidia.com>
Reviewed-by: Erez Shitrit <erezsh@nvidia.com>
Reviewed-by: Mark Bloch <mbloch@nvidia.com>
Signed-off-by: Tariq Toukan <tariqt@nvidia.com>
Link: https://patch.msgid.link/20250102181415.1477316-5-tariqt@nvidia.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>