ARC: [plat*] move code out of .init_machine into common

All the platforms do the same thing in init_machine callback so move it
out of callback into caller of callback

Signed-off-by: Vineet Gupta <vgupta@synopsys.com>

arch/arc/kernel/setup.c

@@ -13,7 +13,9 @@
 #include <linux/console.h>
 #include <linux/module.h>
 #include <linux/cpu.h>
+#include <linux/clk-provider.h>
 #include <linux/of_fdt.h>
+#include <linux/of_platform.h>
 #include <linux/cache.h>
 #include <asm/sections.h>
 #include <asm/arcregs.h>
@@ -379,7 +381,13 @@ void __init setup_arch(char **cmdline_p)
 
 static int __init customize_machine(void)
 {
-	/* Add platform devices */
+	of_clk_init(NULL);
+	/*
+	 * Traverses flattened DeviceTree - registering platform devices
+	 * (if any) complete with their resources
+	 */
+	of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL);
+
 	if (machine_desc->init_machine)
 		machine_desc->init_machine();