xen: sync with xen headers

xen: sync with xen headers

Use the newest headers from the xen tree to get some new structure
layouts.

Signed-off-by: Juergen Gross <jgross@suse.com>
Reviewed-by: David Vrabel <david.vrabel@citrix.com>
Acked-by: Konrad Rzeszutek Wilk <Konrad.wilk@oracle.com>
Signed-off-by: David Vrabel <david.vrabel@citrix.com>
(cherry picked from commit 17fb46b1190b677a37cdd636e2aa30052109f51b)
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
(cherry picked from commit 87feb4932d17fa759a755ba34e927440c1591579)