crypto: qat - add support for relative FW ucode loading

Improve the way micro instructions (FW code) are uploaded to Accelerator
Engines (AEs). If code starts at PC zero (absolute addressing), read
uwords with no relative address. Otherwise, use relative addressing to
the page region.

Signed-off-by: Jack Xu <jack.xu@intel.com>
Co-developed-by: Wojciech Ziemba <wojciech.ziemba@intel.com>
Signed-off-by: Wojciech Ziemba <wojciech.ziemba@intel.com>
Reviewed-by: Giovanni Cabiddu <giovanni.cabiddu@intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>