rdma/cm: specify QP type when creating an ID

rdma/cm: specify QP type when creating an ID

The rdma_cm infers the QP type from the port space selected by the
user.  In order to support RDMA_PS_IB, we need to know which
QP type the user intends to support in order to perform the
correction operation, such as sending a REQ versus SIDR.

Modify rdma_create_id to allow the user to specify the QP type,
and use it to make our selections of datagram versus connected
mode.

Signed-off-by: Sean Hefty <sean.hefty@intel.com>