USB: convert drivers/input/* to use module_usb_driver()

This converts the drivers in drivers/input/* to use the
module_usb_driver() macro which makes the code smaller and a bit
simpler.

Added bonus is that it removes some unneeded kernel log messages about
drivers loading and/or unloading.

Cc: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Cc: Ville Syrjala <syrjala@sci.fi>
Cc: Henk Vergonet <Henk.Vergonet@gmail.com>
Cc: Alessandro Rubini <rubini@ipvvis.unipv.it>
Cc: Henrik Rydberg <rydberg@euromail.se>
Cc: "Magnus Hörlin" <magnus@alefors.se>
Cc: Chris Moeller <kode54@gmail.c>
Cc: Christoph Fritz <chf.fritz@googlemail.com>
Cc: Lucas De Marchi <lucas.demarchi@profusion.mobi>
Cc: Jesper Juhl <jj@chaosbits.net>
Cc: Edwin van Vliet <edwin@cheatah.nl>
Cc: Ping Cheng <pingc@wacom.com>
Cc: Eduard Hasenleithner <eduard@hasenleithner.at>
Cc: Alexander Strakh <strakh@ispras.ru>
Cc: Glenn Sommer <gsommer@datanordisk.dk>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
diff --git a/drivers/input/tablet/aiptek.c b/drivers/input/tablet/aiptek.c
index 6d89fd1..d5ef3de 100644
--- a/drivers/input/tablet/aiptek.c
+++ b/drivers/input/tablet/aiptek.c
@@ -1919,21 +1919,7 @@
 	.id_table = aiptek_ids,
 };
 
-static int __init aiptek_init(void)
-{
-	int result = usb_register(&aiptek_driver);
-	if (result == 0) {
-		printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_VERSION ":"
-		       DRIVER_DESC "\n");
-		printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_AUTHOR "\n");
-	}
-	return result;
-}
-
-static void __exit aiptek_exit(void)
-{
-	usb_deregister(&aiptek_driver);
-}
+module_usb_driver(aiptek_driver);
 
 MODULE_AUTHOR(DRIVER_AUTHOR);
 MODULE_DESCRIPTION(DRIVER_DESC);
@@ -1943,6 +1929,3 @@
 MODULE_PARM_DESC(programmableDelay, "delay used during tablet programming");
 module_param(jitterDelay, int, 0);
 MODULE_PARM_DESC(jitterDelay, "stylus/mouse settlement delay");
-
-module_init(aiptek_init);
-module_exit(aiptek_exit);