driver inclusion
category: bugfix
bugzilla: NA
CVE: NA

This helper iterates over a DMA-mapped SGL and returns contiguous memory
blocks aligned to a HW supported page size.
Suggested-by: NJason Gunthorpe <jgg@ziepe.ca>
Signed-off-by: NShiraz Saleem <shiraz.saleem@intel.com>
Signed-off-by: NJason Gunthorpe <jgg@mellanox.com>
Signed-off-by: NXi Wang <wangxi11@huawei.com>
Signed-off-by: NShunfeng Yang <yangshunfeng2@huawei.com>
Reviewed-by: Nchunzhi hu <huchunzhi@huawei.com>
Signed-off-by: NYang Yingliang <yangyingliang@huawei.com>