[MIPS] Rename _machine_power_off to pm_power_off so the kernel builds again.
    
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
diff --git a/arch/mips/vr41xx/common/pmu.c b/arch/mips/vr41xx/common/pmu.c
index 02bf4f7..5e46979 100644
--- a/arch/mips/vr41xx/common/pmu.c
+++ b/arch/mips/vr41xx/common/pmu.c
@@ -21,6 +21,7 @@
 #include <linux/init.h>
 #include <linux/ioport.h>
 #include <linux/kernel.h>
+#include <linux/pm.h>
 #include <linux/smp.h>
 #include <linux/types.h>
 
@@ -114,7 +115,7 @@
 
 	_machine_restart = vr41xx_restart;
 	_machine_halt = vr41xx_halt;
-	_machine_power_off = vr41xx_power_off;
+	pm_power_off = vr41xx_power_off;
 
 	return 0;
 }