crypto: hisilicon-Cap block size at 2^31

hulk inclusion
category: Feature
bugzilla: NA
CVE: NA

The function hisi_acc_create_sg_pool may allocate a block of
memory of size PAGE_SIZE * 2^(MAX_ORDER - 1).  This value may
exceed 2^31 on ia64, which would overflow the u32.
This patch caps it at 2^31.

Signed-off-by: Yu'an Wang <wangyuan46@huawei.com>
Signed-off-by: Zibo Xu <xuzaibo@huawei.com>
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>