Bluetooth: Convert mgmt to use HCI chan registration API

This patch converts the existing mgmt code to use the newly introduced
generic API for registering HCI channels with mgmt-like semantics.

Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
diff --git a/net/bluetooth/af_bluetooth.c b/net/bluetooth/af_bluetooth.c
index 20a4698..70f9d94 100644
--- a/net/bluetooth/af_bluetooth.c
+++ b/net/bluetooth/af_bluetooth.c
@@ -749,6 +749,13 @@
 		goto sock_err;
 	}
 
+	err = mgmt_init();
+	if (err < 0) {
+		sco_exit();
+		l2cap_exit();
+		goto sock_err;
+	}
+
 	return 0;
 
 sock_err:
@@ -763,6 +770,8 @@
 
 static void __exit bt_exit(void)
 {
+	mgmt_exit();
+
 	sco_exit();
 
 	l2cap_exit();