ARM: at91: pm: change at91_pm_set_standby() to static

Since at91_pm_set_standby() will not be used out of the pm.c file,
change its attribute from extern to static, remove its declaration as well.

Signed-off-by: Wenyou Yang <wenyou.yang@atmel.com>
Acked-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>

arch/arm/mach-at91/pm.c

@@ -218,7 +218,7 @@ static struct platform_device at91_cpuidle_device = {
 	.name = "cpuidle-at91",
 };
 
-void at91_pm_set_standby(void (*at91_standby)(void))
+static void at91_pm_set_standby(void (*at91_standby)(void))
 {
 	if (at91_standby) {
 		at91_cpuidle_device.dev.platform_data = at91_standby;

arch/arm/mach-at91/pm.h

@@ -15,12 +15,6 @@
 
 #include <mach/at91_ramc.h>
 
-#ifdef CONFIG_PM
-extern void at91_pm_set_standby(void (*at91_standby)(void));
-#else
-static inline void at91_pm_set_standby(void (*at91_standby)(void)) { }
-#endif
-
 /*
  * The AT91RM9200 goes into self-refresh mode with this command, and will
  * terminate self-refresh automatically on the next SDRAM access.