[MIPS] replace inline assembler to cpu_wait()

Signed-off-by: Yoichi Yuasa <yoichi_yuasa@tripeaks.co.jp>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

arch/mips/gt64120/wrppmc/reset.c

@@ -5,10 +5,12 @@
  *
  * Copyright (C) 1997 Ralf Baechle
  */
+#include <linux/irqflags.h>
 #include <linux/kernel.h>
 
 #include <asm/cacheflush.h>
 #include <asm/mipsregs.h>
+#include <asm/processor.h>
 
 void wrppmc_machine_restart(char *command)
 {
@@ -32,11 +34,8 @@ void wrppmc_machine_halt(void)
 
 	printk(KERN_NOTICE "You can safely turn off the power\n");
 	while (1) {
-		__asm__(
-			".set\tmips3\n\t"
-			"wait\n\t"
-			".set\tmips0"
-		);
+		if (cpu_wait)
+			cpu_wait();
 	}
 }