IB/hfi1: Add 16B rcvhdr trace support

Add trace_hfi1_rcvhdr support for bypass packets.
While here, remove the etype argument as it is available
in struct hfi1_packet.

Reviewed-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
Signed-off-by: Don Hiatt <don.hiatt@intel.com>
Signed-off-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>