Tag config space fields as having little endian-ness.
Note that balloon is special: LE even when using
the legacy interface.
Signed-off-by: NMichael S. Tsirkin <mst@redhat.com>
Acked-by: NDavid Hildenbrand <david@redhat.com>
Reviewed-by: NCornelia Huck <cohuck@redhat.com>