crypto: qat - change ae_num to ae_id

Change the logic how acceleration engines are indexed to make it
easier to read. Aslo some return code values updates to better reflect
what failed.

Signed-off-by: Pingchao Yang <pingchao.yang@intel.com>
Signed-off-by: Tadeusz Struk <tadeusz.struk@intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2 files changed