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

This converts the drivers in drivers/hid/* 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: Jiri Kosina <jkosina@suse.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

drivers/hid/usbhid/usbkbd.c

@@ -354,19 +354,4 @@ static struct usb_driver usb_kbd_driver = {
 	.id_table =	usb_kbd_id_table,
 };
 
-static int __init usb_kbd_init(void)
-{
-	int result = usb_register(&usb_kbd_driver);
-	if (result == 0)
-		printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_VERSION ":"
-				DRIVER_DESC "\n");
-	return result;
-}
-
-static void __exit usb_kbd_exit(void)
-{
-	usb_deregister(&usb_kbd_driver);
-}
-
-module_init(usb_kbd_init);
-module_exit(usb_kbd_exit);
+module_usb_driver(usb_kbd_driver);

drivers/hid/usbhid/usbmouse.c

@@ -241,19 +241,4 @@ static struct usb_driver usb_mouse_driver = {
 	.id_table	= usb_mouse_id_table,
 };
 
-static int __init usb_mouse_init(void)
-{
-	int retval = usb_register(&usb_mouse_driver);
-	if (retval == 0)
-		printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_VERSION ":"
-				DRIVER_DESC "\n");
-	return retval;
-}
-
-static void __exit usb_mouse_exit(void)
-{
-	usb_deregister(&usb_mouse_driver);
-}
-
-module_init(usb_mouse_init);
-module_exit(usb_mouse_exit);
+module_usb_driver(usb_mouse_driver);