IB/rdmavt: Add wc_flags and wc_immdata to cq entry trace

These fields were missing from the trace.  Add them.

Fixes: c6ad9482 ("IB/rdmavt: Add tracing for cq entry and poll")
Reviewed-by: Michael J. Ruhl <michael.j.ruhl@intel.com>
Signed-off-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
Signed-off-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>