staging/rdma/hfi1: Reduce number of parameters passed to send handlers

The current send function handlers are passed a bunch of parameters that are
already part of the data structure that is passed in first (qp). This patch
removes all of this and just passes the QP.

Reviewed-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
Signed-off-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Ira Weiny <ira.weiny@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>