RDMA/irdma: Discover and set up GEN3 hardware register layout

RDMA/irdma: Discover and set up GEN3 hardware register layout

Discover the hardware register layout for GEN3 devices through an RDMA
virtual channel operation with the Control Plane (CP). Set up the
corresponding hardware attributes specific to GEN3 devices.

Signed-off-by: Christopher Bednarz <christopher.n.bednarz@intel.com>
Signed-off-by: Tatyana Nikolova <tatyana.e.nikolova@intel.com>
Link: https://patch.msgid.link/20250827152545.2056-4-tatyana.e.nikolova@intel.com
Tested-by: Jacob Moroni <jmoroni@google.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>