RDMA/bnxt_re: Add debugfs info entry for device and resource information

Add a new debugfs info entry that displays device information and
non-statistics data using the seq_file interface. This entry shows:

- Resource watermarks (peak usage tracking)
- Operational counters (CQ resize count)
- Doorbell pacing information

Link: https://patch.msgid.link/r/20250923062657.981487-2-kalesh-anakkur.purayil@broadcom.com


Signed-off-by: Anantha Prabhu <anantha.prabhu@broadcom.com>
Signed-off-by: Kalesh AP <kalesh-anakkur.purayil@broadcom.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>