RDMA/bnxt_re: Add compatibility checks to the uapi path

RDMA/bnxt_re: Add compatibility checks to the uapi path

Check that the driver data is properly sized and properly zeroed by
calling ib_copy_validate_udata_in().

Use git history to find the commit introducing each req struct and use
that to select the end member.

Link: https://patch.msgid.link/r/8-v3-bd56dd443069+49-bnxt_re_uapi_jgg@nvidia.com
Tested-by: Sriharsha Basavapatna <sriharsha.basavapatna@broadcom.com>
Acked-by: Sriharsha Basavapatna <sriharsha.basavapatna@broadcom.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>