staging/rdma/hfi1: Add basic rdmavt capability flags for hfi1

Most functionality is still being done in the driver, set flags so that
rdmavt will let hfi1 continue to handle mr, qp, and cq init.

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>