[PATCH][2/2][MIPS] add cpu_wait() to machine_halt()

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

Added cpu_wait() to machine_halt().
For the power reduction in 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  2007-10-22 09:32:10.074729000 +0900
+++ mips/arch/mips/cobalt/reset.c       2007-10-22 09:59:23.092786250 +0900
@@ -12,6 +12,8 @@
 #include <linux/io.h>
 #include <linux/leds.h>
 
+#include <asm/processor.h>
+
 #include <cobalt.h>
 
 #define RESET_PORT     ((void __iomem *)CKSEG1ADDR(0x1c000000))
@@ -35,7 +37,10 @@ void cobalt_machine_halt(void)
 
        local_irq_disable();
        printk(KERN_INFO "You can switch the machine off now.\n");
-       while (1) ;
+       while (1) {
+               if (cpu_wait)
+                       cpu_wait();
+       }
 }
 
 void cobalt_machine_restart(char *command)