powerpc: Call chained reset handlers during reset

Call out to all restart handlers that were added via
register_restart_handler() API when restarting the machine.
Signed-off-by: NAndrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: NScott Wood <oss@buserror.net>

arch/powerpc/kernel/setup-common.c

@@ -146,6 +146,10 @@ void machine_restart(char *cmd)
 		ppc_md.restart(cmd);
 
 	smp_send_stop();
+
+	do_kernel_restart(cmd);
+	mdelay(1000);
+
 	machine_hang();
 }