net/mlx5: HWS, rework the check if matcher size can be increased

net/mlx5: HWS, rework the check if matcher size can be increased

When checking if the matcher size can be increased, check both
match and action RTCs. Also, consider the increasing step - check
that it won't cause the new matcher size to become unsupported.

Additionally, since we're using '+ 1' for action RTC size yet
again, define it as macro and use in all the required places.

Signed-off-by: Yevgeny Kliteynik <kliteyn@nvidia.com>
Reviewed-by: Mark Bloch <mbloch@nvidia.com>
Signed-off-by: Tariq Toukan <tariqt@nvidia.com>
Link: https://patch.msgid.link/20250114130646.1937192-2-tariqt@nvidia.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>