Bluetooth: Add __init and __exit marks to UART drivers

Those marks are useful to save space in the binary and in the memory.

Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
diff --git a/drivers/bluetooth/hci_ll.c b/drivers/bluetooth/hci_ll.c
index 5744aba..38595e7 100644
--- a/drivers/bluetooth/hci_ll.c
+++ b/drivers/bluetooth/hci_ll.c
@@ -517,7 +517,7 @@
 	.flush		= ll_flush,
 };
 
-int ll_init(void)
+int __init ll_init(void)
 {
 	int err = hci_uart_register_proto(&llp);
 
@@ -529,7 +529,7 @@
 	return err;
 }
 
-int ll_deinit(void)
+int __exit ll_deinit(void)
 {
 	return hci_uart_unregister_proto(&llp);
 }