crypto: qat - relocate qat_algs_alloc_flags()

Move qat_algs_alloc_flags() from qat_crypto.h to qat_bl.h as this will
be used also by the compression logic.

Signed-off-by: Giovanni Cabiddu <giovanni.cabiddu@intel.com>
Reviewed-by: Wojciech Ziemba <wojciech.ziemba@intel.com>
Reviewed-by: Adam Guerin <adam.guerin@intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>