[MIPS] remove wrppmc_machine_power_off()

It can be replace wrppmc_machine_halt().
Signed-off-by: NYoichi Yuasa <yoichi_yuasa@tripeaks.co.jp>
Signed-off-by: NRalf Baechle <ralf@linux-mips.org>

arch/mips/gt64120/wrppmc/reset.c

@@ -38,8 +38,3 @@ void wrppmc_machine_halt(void)
 			cpu_wait();
 	}
 }
-
-void wrppmc_machine_power_off(void)
-{
-	wrppmc_machine_halt();
-}

arch/mips/gt64120/wrppmc/setup.c

@@ -98,11 +98,10 @@ void __init plat_mem_setup(void)
 {
 	extern void wrppmc_machine_restart(char *command);
 	extern void wrppmc_machine_halt(void);
-	extern void wrppmc_machine_power_off(void);
 
 	_machine_restart = wrppmc_machine_restart;
 	_machine_halt	 = wrppmc_machine_halt;
-	pm_power_off	 = wrppmc_machine_power_off;
+	pm_power_off	 = wrppmc_machine_halt;
 
 	/* This makes the operations of 'in/out[bwl]' to the
 	 * physical address ( < KSEG0) can work via KSEG1