crypto/qat: create structures to support various generations

crypto/qat: create structures to support various generations

Create data structures to support different generations
of qat hardware supplying services through different queue pairs.
 - Add two new structs qat_gen_hw_data and qat_qp_hw_dat
 - Add a qat_service_type enum
An array of qat_qp_hw_data elements is
initialised with constants, these are arranged so that the qp_id used
on the API can be used as an index to pick up the qp data to use.
The constants are common to current generations,
new arrays will be added for future generations.

Signed-off-by: Fiona Trahe <fiona.trahe@intel.com>