RDMA/irdma: Add GEN3 CQP support with deferred completions

RDMA/irdma: Add GEN3 CQP support with deferred completions

GEN3 introduces asynchronous handling of Control QP (CQP) operations to
minimize head-of-line blocking. Create the CQP using the updated GEN3-
specific descriptor fields and implement the necessary support for this
deferred completion mechanism.

Signed-off-by: Krzysztof Czurylo <krzysztof.czurylo@intel.com>
Signed-off-by: Tatyana Nikolova <tatyana.e.nikolova@intel.com>
Link: https://patch.msgid.link/20250827152545.2056-5-tatyana.e.nikolova@intel.com
Tested-by: Jacob Moroni <jmoroni@google.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>