ARM: at91: at91rm9200: remove deprecated arm_pm_restart

Now that a proper driver is available, remove at91rm9200_restart.
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>

arch/arm/mach-at91/at91rm9200.c

@@ -15,8 +15,6 @@
 #include <asm/mach/arch.h>
 #include <asm/system_misc.h>
 
-#include <mach/at91_st.h>
-
 #include "generic.h"
 #include "soc.h"
 
@@ -25,15 +23,6 @@ static const struct at91_soc rm9200_socs[] = {
 	{ /* sentinel */ },
 };
 
-static void at91rm9200_restart(enum reboot_mode reboot_mode, const char *cmd)
-{
-	/*
-	 * Perform a hardware reset with the use of the Watchdog timer.
-	 */
-	at91_st_write(AT91_ST_WDMR, AT91_ST_RSTEN | AT91_ST_EXTEN | 1);
-	at91_st_write(AT91_ST_CR, AT91_ST_WDRST);
-}
-
 static void __init at91rm9200_dt_timer_init(void)
 {
 	of_clk_init(NULL);
@@ -52,7 +41,6 @@ static void __init at91rm9200_dt_device_init(void)
 	of_platform_populate(NULL, of_default_bus_match_table, NULL, soc_dev);
 
 	arm_pm_idle = at91rm9200_idle;
-	arm_pm_restart = at91rm9200_restart;
 	at91rm9200_pm_init();
 }