qat: fix build on 32-bit systems

qat: fix build on 32-bit systems

Fixing build on 32-bit systems on quick assist driver - for example:
drivers/crypto/qat/qat_crypto.c: In function ‘qat_alg_write_mbuf_entry’:
drivers/crypto/qat/qat_crypto.c:408:34: error:
cast from pointer to integer of different size [-Werror=pointer-to-int-cast]

Fixes: 1703e94ac5ce ("qat: add driver for QuickAssist devices")
Signed-off-by: John Griffin <john.griffin@intel.com>
Acked-by: Pablo de Lara <pablo.de.lara.guarch@intel.com>