HID: adding __init/__exit macros to module init/exit functions

Trivial patch which adds the __init and __exit macros to the module_init /
module_exit functions of several HID drivers from drivers/hid/

Signed-off-by: Peter Huewe <peterhuewe@gmx.de>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
diff --git a/drivers/hid/hid-lg.c b/drivers/hid/hid-lg.c
index b30af30..0f870a3 100644
--- a/drivers/hid/hid-lg.c
+++ b/drivers/hid/hid-lg.c
@@ -317,12 +317,12 @@
 	.probe = lg_probe,
 };
 
-static int lg_init(void)
+static int __init lg_init(void)
 {
 	return hid_register_driver(&lg_driver);
 }
 
-static void lg_exit(void)
+static void __exit lg_exit(void)
 {
 	hid_unregister_driver(&lg_driver);
 }