Bluetooth: Rename sysfs un/register to add/del

As we introduced hci_init_sysfs() we should also rename
hci_register_sysfs() and hci_unregister_sysfs() to hci_add_sysfs() and
hci_del_sysfs() like we do with hci_conn_add/del_sysfs(). It looks more
consistent now.

Signed-off-by: David Herrmann <dh.herrmann@googlemail.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
diff --git a/net/bluetooth/hci_sysfs.c b/net/bluetooth/hci_sysfs.c
index a7d5de3..1f9f876 100644
--- a/net/bluetooth/hci_sysfs.c
+++ b/net/bluetooth/hci_sysfs.c
@@ -553,7 +553,7 @@
 	device_initialize(dev);
 }
 
-int hci_register_sysfs(struct hci_dev *hdev)
+int hci_add_sysfs(struct hci_dev *hdev)
 {
 	struct device *dev = &hdev->dev;
 	int err;
@@ -587,7 +587,7 @@
 	return 0;
 }
 
-void hci_unregister_sysfs(struct hci_dev *hdev)
+void hci_del_sysfs(struct hci_dev *hdev)
 {
 	BT_DBG("%p name %s bus %d", hdev, hdev->name, hdev->bus);