parisc: machine_power_off() should call pm_power_off()

Signed-off-by: Helge Deller <deller@gmx.de>
Tested-by: Matt Turner <mattst88@gmail.com>

arch/parisc/kernel/process.c

@@ -138,6 +138,10 @@ void machine_power_off(void)
 	pdc_soft_power_button(0);
 	
 	pdc_chassis_send_status(PDC_CHASSIS_DIRECT_SHUTDOWN);
+
+	/* ipmi_poweroff may have been installed. */
+	if (pm_power_off)
+		pm_power_off();
 		
 	/* It seems we have no way to power the system off via
 	 * software. The user has to press the button himself. */
@@ -151,7 +155,7 @@ void machine_power_off(void)
 	for (;;);
 }
 
-void (*pm_power_off)(void) = machine_power_off;
+void (*pm_power_off)(void);
 EXPORT_SYMBOL(pm_power_off);
 
 void flush_thread(void)