HID: Use module_hid_driver macro

Use the new module_hid_driver macro in all HID drivers that have
a simple register/unregister init/exit.

This also converts the hid drivers that test for a failure of
hid_register_driver() and report the failure. Using module_hid_driver
in those drivers removes the failure message.

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
diff --git a/drivers/hid/hid-petalynx.c b/drivers/hid/hid-petalynx.c
index 4c521de..736b250 100644
--- a/drivers/hid/hid-petalynx.c
+++ b/drivers/hid/hid-petalynx.c
@@ -103,17 +103,6 @@
 	.input_mapping = pl_input_mapping,
 	.probe = pl_probe,
 };
+module_hid_driver(pl_driver);
 
-static int __init pl_init(void)
-{
-	return hid_register_driver(&pl_driver);
-}
-
-static void __exit pl_exit(void)
-{
-	hid_unregister_driver(&pl_driver);
-}
-
-module_init(pl_init);
-module_exit(pl_exit);
 MODULE_LICENSE("GPL");