watchdog: fix platform driver hotplug/coldplug

Since 43cc71eed1, the platform modalias is
prefixed with "platform:".  Add MODULE_ALIAS() to the hotpluggable watchdog
drivers, to re-enable auto loading.

[dbrownell@users.sourceforge.net: more drivers; registration fixes]
Signed-off-by: Kay Sievers <kay.sievers@vrfy.org>
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Cc: Wim Van Sebroeck <wim@iguana.be>
Cc: Greg KH <greg@kroah.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

drivers/watchdog/davinci_wdt.c

@@ -248,6 +248,7 @@ static int davinci_wdt_remove(struct platform_device *pdev)
 static struct platform_driver platform_wdt_driver = {
 	.driver = {
 		.name = "watchdog",
+		.owner	= THIS_MODULE,
 	},
 	.probe = davinci_wdt_probe,
 	.remove = davinci_wdt_remove,
@@ -277,3 +278,4 @@ MODULE_PARM_DESC(heartbeat,
 
 MODULE_LICENSE("GPL");
 MODULE_ALIAS_MISCDEV(WATCHDOG_MINOR);
+MODULE_ALIAS("platform:watchdog");