[ACPI] fix reboot upon suspend-to-disk

http://bugzilla.kernel.org/show_bug.cgi?id=4320

Signed-off-by: Alexey Starikovskiy <alexey.y.starikovskiy@intel.com>
Acked-by: Pavel Machek <pavel@suse.cz>
Signed-off-by: Len Brown <len.brown@intel.com>

include/linux/kernel.h

@@ -181,6 +181,7 @@ extern enum system_states {
 	SYSTEM_HALT,
 	SYSTEM_POWER_OFF,
 	SYSTEM_RESTART,
+	SYSTEM_SUSPEND_DISK,
 } system_state;
 
 #define TAINT_PROPRIETARY_MODULE	(1<<0)

include/linux/reboot.h

@@ -60,8 +60,7 @@ extern void machine_crash_shutdown(struct pt_regs *);
  */
 
 extern void kernel_restart_prepare(char *cmd);
-extern void kernel_halt_prepare(void);
-extern void kernel_power_off_prepare(void);
+extern void kernel_shutdown_prepare(enum system_states state);
 
 extern void kernel_restart(char *cmd);
 extern void kernel_halt(void);