RDMA/irdma: Restrict Memory Window and CQE Timestamping to GEN3

With the deprecation of Memory Window and Timestamping support in GEN2,
move these features to be exclusive to GEN3. This iteration supports
only Type2 Memory Windows. Additionally, it includes the reporting of
the timestamp mask and Host Channel Adapter (HCA) core clock frequency
via the query device verb.

Signed-off-by: Shiraz Saleem <shiraz.saleem@intel.com>
Signed-off-by: Tatyana Nikolova <tatyana.e.nikolova@intel.com>
Link: https://patch.msgid.link/20250827152545.2056-14-tatyana.e.nikolova@intel.com


Tested-by: Jacob Moroni <jmoroni@google.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>