RDMA/cxgb4: Dump vendor specific QP details

Restore the missing functionality to dump vendor specific QP details,
which was mistakenly removed in the commit mentioned in Fixes line.

Fixes: 5cc34116 ("RDMA: Add dedicated QP resource tracker function")
Link: https://patch.msgid.link/r/ed9844829135cfdcac7d64285688195a5cd43f82.1728323026.git.leonro@nvidia.com


Reported-by: Dr. David Alan Gilbert <linux@treblig.org>
Closes: https://lore.kernel.org/all/Zv_4qAxuC0dLmgXP@gallifrey


Signed-off-by: Leon Romanovsky <leonro@nvidia.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>