RDMA/hns: Add support for filling GMV table

Add a interface to fill GMV(SGID/SMAC/VLAN) table for HIP09, all of above
source address information is stored as an entry in GMV table. The users
just need to provide the index to the hardware when POST SEND.

Link: https://lore.kernel.org/r/1603508836-33054-3-git-send-email-liweihang@huawei.com


Signed-off-by: Weihang Li <liweihang@huawei.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>