IB/hfi1,qib: Do not send QKey trap for UD qps

According to IBTA spec a QKey violation should not result in a bad qkey
trap being triggered for UD queue pairs. Also since it is a silent error
we do not increment the q_key violation or the dropped packet counters.

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