net/mlx5: Bridge, increase bridge tables sizes

Bridge ingress and egress tables got more flow groups recently for QinQ
support and will get more in following patches of this series. Increase the
sizes of the tables to allow offloading more flows in each mode.

Signed-off-by: Vlad Buslov <vladbu@nvidia.com>
Reviewed-by: Maor Dickman <maord@nvidia.com>
Reviewed-by: Roi Dayan <roid@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>