net/mlx5: HWS, Export rule skip logic

The bwc layer will use `mlx5hws_rule_skip` to keep track of numbers of
RX and TX rules individually, so export this function for future usage.

Signed-off-by: Vlad Dogaru <vdogaru@nvidia.com>
Reviewed-by: Yevgeny Kliteynik <kliteyn@nvidia.com>
Signed-off-by: Mark Bloch <mbloch@nvidia.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://patch.msgid.link/20250703185431.445571-4-mbloch@nvidia.com


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