IB/hfi1: Add unique trace point for pio and sdma send

This allows for separately enabling pio and sdma
tracepoints to cut the volume of trace information.

Reviewed-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>