ARM: restart: orion5x: use new restart hook

Hook these platforms restart code into the new restart hook rather than
using arch_reset().

In addition, convert calls to arm_machine_restart() to orion5x_restart()
to ensure that they continue to work as intended.

Acked-by: Nicolas Pitre <nico@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

arch/arm/mach-orion5x/common.c

@@ -18,6 +18,7 @@
 #include <linux/mbus.h>
 #include <linux/mv643xx_i2c.h>
 #include <linux/ata_platform.h>
+#include <linux/delay.h>
 #include <net/dsa.h>
 #include <asm/page.h>
 #include <asm/setup.h>
@@ -304,6 +305,17 @@ void __init orion5x_init(void)
 	orion5x_wdt_init();
 }
 
+void orion5x_restart(char mode, const char *cmd)
+{
+	/*
+	 * Enable and issue soft reset
+	 */
+	orion5x_setbits(RSTOUTn_MASK, (1 << 2));
+	orion5x_setbits(CPU_SOFT_RESET, 1);
+	mdelay(200);
+	orion5x_clrbits(CPU_SOFT_RESET, 1);
+}
+
 /*
  * Many orion-based systems have buggy bootloader implementations.
  * This is a common fixup for bogus memory tags.