Bluetooth: Fix userspace compatibility issue with mgmt interface

To ensure that old user space versions do not accidentally pick up and
try to use the management channel, use a different channel number.
Reported-by: NKeith Packard <keithp@keithp.com>
Acked-by: NJohan Hedberg <johan.hedberg@intel.com>
Acked-by: NMarcel Holtmann <marcel@holtmann.org>
Signed-off-by: NGustavo Padovan <gustavo@padovan.org>

include/net/bluetooth/hci.h

@@ -1328,8 +1328,8 @@ struct sockaddr_hci {
 #define HCI_DEV_NONE	0xffff
 
 #define HCI_CHANNEL_RAW		0
-#define HCI_CHANNEL_CONTROL	1
 #define HCI_CHANNEL_MONITOR	2
+#define HCI_CHANNEL_CONTROL	3
 
 struct hci_filter {
 	unsigned long type_mask;