crypto: qat - fix comment structure

Move comment description to the same line as the function name.

This is to fix the following warning when compiling the QAT driver
using the clang compiler with CC=clang W=2:
    drivers/crypto/intel/qat/qat_common/qat_crypto.c:108: warning: missing initial short description on line:
     * qat_crypto_vf_dev_config()

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