sh-pfc: Split platform device and platform driver registration

Move platform driver registration to a static postcore initcall. This
prepares the move of platform device registration to arch code.

Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Acked-by: Paul Mundt <lethal@linux-sh.org>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

drivers/sh/pfc/core.c

@@ -573,20 +573,17 @@ static struct platform_device sh_pfc_device = {
 
 int __init register_sh_pfc(struct sh_pfc_platform_data *pdata)
 {
-	int rc;
-
 	sh_pfc_device.dev.platform_data = pdata;
 
-	rc = platform_driver_register(&sh_pfc_driver);
-	if (likely(!rc)) {
-		rc = platform_device_register(&sh_pfc_device);
-		if (unlikely(rc))
-			platform_driver_unregister(&sh_pfc_driver);
-	}
-
-	return rc;
+	return platform_device_register(&sh_pfc_device);
 }
 
+static int __init sh_pfc_init(void)
+{
+	return platform_driver_register(&sh_pfc_driver);
+}
+postcore_initcall(sh_pfc_init);
+
 static void __exit sh_pfc_exit(void)
 {
 	platform_driver_unregister(&sh_pfc_driver);