IB/hfi1: Add a function to build TID RDMA WRITE response

This patch adds the function to build TID RDMA WRITE response. The
main role of the TID RDMA WRITE RESP packet is to send TID entries
to the requester so that they can be used to encode TID RDMA WRITE
DATA packet.

Signed-off-by: Mitko Haralanov <mitko.haralanov@intel.com>
Signed-off-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
Signed-off-by: Ashutosh Dixit <ashutosh.dixit@intel.com>
Signed-off-by: Kaike Wan <kaike.wan@intel.com>
Signed-off-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>