[IA64] Fix NVRAM data cannot be saved when guest execute "reboot"

Also fix "xm reboot" instruction in Xend.

Signed-off-by: Zhang Xin <xing.z.zhang@intel.com>

tools/python/xen/xend/XendDomainInfo.py

@@ -459,6 +459,7 @@ class XendDomainInfo:
             hvm_pvdrv = xc.hvm_get_param(self.domid, HVM_PARAM_CALLBACK_IRQ)
             if not hvm_pvdrv:
                 code = REVERSE_DOMAIN_SHUTDOWN_REASONS[reason]
+                xc.domain_destroy_hook(self.domid)
                 log.info("HVM save:remote shutdown dom %d!", self.domid)
                 xc.domain_shutdown(self.domid, code)