hv: Add reboot shell command

To trigger warm reboot for debugging.

Signed-off-by: Yin Fengwei <fengwei.yin@intel.com>
Acked-by: Eddie Dong <Eddie.dong@intel.com>

hypervisor/include/arch/x86/reboot.h

@@ -0,0 +1,9 @@
+/*
+ * Copyright (C) <2018> Intel Corporation
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+#ifndef	REBOOT_H
+#define	REBOOT_H
+
+int warm_reboot(void);
+#endif