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>

drivers/bluetooth/hci_h4.c

@@ -173,7 +173,7 @@ static struct hci_uart_proto h4p = {
 	.flush		= h4_flush,
 };
 
-int h4_init(void)
+int __init h4_init(void)
 {
 	int err = hci_uart_register_proto(&h4p);
 
@@ -185,7 +185,7 @@ int h4_init(void)
 	return err;
 }
 
-int h4_deinit(void)
+int __exit h4_deinit(void)
 {
 	return hci_uart_unregister_proto(&h4p);
 }