net/mlx5: Set default max eqs for SFs

If the user hasn't configured max_io_eqs set a low default. The SF
driver shouldn't try to create more than this, but FW will enforce this
limit.

Signed-off-by: Daniel Jurgens <danielj@nvidia.com>
Reviewed-by: William Tu <witu@nvidia.com>
Signed-off-by: Tariq Toukan <tariqt@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
Link: https://patch.msgid.link/20240712003310.355106-4-saeed@kernel.org


Signed-off-by: Jakub Kicinski <kuba@kernel.org>