usb: gadget: add _init/__exit annotations to module init/exit funcs

Add missing _init/__exit annotations to module init/exit funcs.
Signed-off-by: Xiu Jianfeng <xiujianfeng@huawei.com>
Link: https://lore.kernel.org/r/20220917084413.23957-1-xiujianfeng@huawei.comSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/usb/gadget/function/f_tcm.c

@@ -2306,7 +2306,7 @@ static struct usb_function *tcm_alloc(struct usb_function_instance *fi)
 
 DECLARE_USB_FUNCTION(tcm, tcm_alloc_inst, tcm_alloc);
 
-static int tcm_init(void)
+static int __init tcm_init(void)
 {
 	int ret;
 
@@ -2322,7 +2322,7 @@ static int tcm_init(void)
 }
 module_init(tcm_init);
 
-static void tcm_exit(void)
+static void __exit tcm_exit(void)
 {
 	target_unregister_template(&usbg_ops);
 	usb_function_unregister(&tcmusb_func);

drivers/usb/gadget/function/u_serial.c

@@ -1443,7 +1443,7 @@ void gserial_resume(struct gserial *gser)
 }
 EXPORT_SYMBOL_GPL(gserial_resume);
 
-static int userial_init(void)
+static int __init userial_init(void)
 {
 	struct tty_driver *driver;
 	unsigned			i;
@@ -1496,7 +1496,7 @@ static int userial_init(void)
 }
 module_init(userial_init);
 
-static void userial_cleanup(void)
+static void __exit userial_cleanup(void)
 {
 	tty_unregister_driver(gs_tty_driver);
 	tty_driver_kref_put(gs_tty_driver);