Input: revert some over-zealous conversions to module_platform_driver()

Recent conversion to module_platform_driver() went a bit too far and
converted not only drivers that used platform_driver_register() but
also ones using platform_driver_probe(), breaking them in process.

Reported-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
diff --git a/drivers/input/misc/twl4030-pwrbutton.c b/drivers/input/misc/twl4030-pwrbutton.c
index 19a6882..38e4b50 100644
--- a/drivers/input/misc/twl4030-pwrbutton.c
+++ b/drivers/input/misc/twl4030-pwrbutton.c
@@ -107,14 +107,25 @@
 }
 
 static struct platform_driver twl4030_pwrbutton_driver = {
-	.probe		= twl4030_pwrbutton_probe,
 	.remove		= __exit_p(twl4030_pwrbutton_remove),
 	.driver		= {
 		.name	= "twl4030_pwrbutton",
 		.owner	= THIS_MODULE,
 	},
 };
-module_platform_driver(twl4030_pwrbutton_driver);
+
+static int __init twl4030_pwrbutton_init(void)
+{
+	return platform_driver_probe(&twl4030_pwrbutton_driver,
+			twl4030_pwrbutton_probe);
+}
+module_init(twl4030_pwrbutton_init);
+
+static void __exit twl4030_pwrbutton_exit(void)
+{
+	platform_driver_unregister(&twl4030_pwrbutton_driver);
+}
+module_exit(twl4030_pwrbutton_exit);
 
 MODULE_ALIAS("platform:twl4030_pwrbutton");
 MODULE_DESCRIPTION("Triton2 Power Button");