[MIPS] Rename _machine_power_off to pm_power_off so the kernel builds again.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

arch/mips/jazz/setup.c

@@ -19,6 +19,8 @@
 #include <linux/console.h>
 #include <linux/fb.h>
 #include <linux/ide.h>
+#include <linux/pm.h>
+
 #include <asm/bootinfo.h>
 #include <asm/irq.h>
 #include <asm/jazz.h>
@@ -79,7 +81,7 @@ void __init plat_setup(void)
 
 	_machine_restart = jazz_machine_restart;
 	_machine_halt = jazz_machine_halt;
-	_machine_power_off = jazz_machine_power_off;
+	pm_power_off = jazz_machine_power_off;
 
 #warning "Somebody should check if screen_info is ok for Jazz."