xen: use generated hypervisor symbols in arch/x86/xen/trace.c

Instead of manually list all hypervisor calls in arch/x86/xen/trace.c
use the auto generated list.

Signed-off-by: Juergen Gross <jgross@suse.com>
Reviewed-by: David Vrabel <david.vrabel@citrix.com>
Signed-off-by: David Vrabel <david.vrabel@citrix.com>