spi: fix platform driver hotplug/coldplug

Since 43cc71eed1250755986da4c0f9898f9a635cb3bf, the platform modalias is
prefixed with "platform:".  Add MODULE_ALIAS() to the hotpluggable SPI
platform drivers, to allow module 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>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/drivers/spi/omap_uwire.c b/drivers/spi/omap_uwire.c
index 8245b51..5f00bd6 100644
--- a/drivers/spi/omap_uwire.c
+++ b/drivers/spi/omap_uwire.c
@@ -537,10 +537,12 @@
 	return status;
 }
 
+/* work with hotplug and coldplug */
+MODULE_ALIAS("platform:omap_uwire");
+
 static struct platform_driver uwire_driver = {
 	.driver = {
 		.name		= "omap_uwire",
-		.bus		= &platform_bus_type,
 		.owner		= THIS_MODULE,
 	},
 	.remove		= __exit_p(uwire_remove),