[PATCH][4/9][MIPS] add cpu_wait to cobalt_machine_halt.

[Yoichi Yuasa <yoichi_yuasa@tripeaks.co.jp>]

Add cpu_wait to cobalt_machine_halt.

Signed-off-by: Yoichi Yuasa <yoichi_yuasa@tripeaks.co.jp>

diff -pruN -X mips/Documentation/dontdiff mips-orig/arch/mips/cobalt/reset.c 
mips/arch/mips/cobalt/reset.c
--- mips-orig/arch/mips/cobalt/reset.c  2007-09-14 16:14:16.279524250 +0900
+++ mips/arch/mips/cobalt/reset.c       2007-09-14 16:15:40.136765000 +0900
@@ -11,13 +11,18 @@
 #include <linux/irqflags.h>
 #include <linux/kernel.h>
 
+#include <asm/processor.h>
+
 #include <cobalt.h>
 
 void cobalt_machine_halt(void)
 {
        local_irq_disable();
        printk("You can switch the machine off now.\n");
-       while (1) ;
+       while (1) {
+               if (cpu_wait)
+                       cpu_wait();
+       }
 }
 
 void cobalt_machine_restart(char *command)