Merge branch 'mlx5-vhost' of https://git.kernel.org/pub/scm/linux/kernel/git/mellanox/linux.git

This merges a single commit that contains changes to mlx5_ifc.h
It's required to support vq descriptor mappings in mlx5/vdpa

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>