net/mlx5: HWS, Track matcher sizes individually

Track and grow matcher sizes individually for RX and TX RTCs. This
allows RX-only or TX-only use cases to effectively halve the device
resources they use.

For testing we used a simple module that inserts 1M RX-only rules and
measured the number of pages the device requests, and memory usage as
reported by `free -h`.

			Pages		Memory
Before this patch:	300k		1.5GiB
After this patch:	160k		900MiB

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/20250703185431.445571-8-mbloch@nvidia.com


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