Bluetooth: AMP: Remote AMP ctrl definitions

Create remote AMP controllers structure. It is used to keep information
about discovered remote AMP controllers by A2MP protocol.

Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
diff --git a/include/net/bluetooth/amp.h b/include/net/bluetooth/amp.h
index 3414dfd..f57854f 100644
--- a/include/net/bluetooth/amp.h
+++ b/include/net/bluetooth/amp.h
@@ -14,6 +14,21 @@
 #ifndef __AMP_H
 #define __AMP_H
 
+struct amp_ctrl {
+	struct list_head	list;
+	struct kref		kref;
+	__u8			id;
+	__u16			assoc_len_so_far;
+	__u16			assoc_rem_len;
+	__u16			assoc_len;
+	__u8			*assoc;
+};
+
+int amp_ctrl_put(struct amp_ctrl *ctrl);
+struct amp_ctrl *amp_ctrl_add(struct amp_mgr *mgr);
+struct amp_ctrl *amp_ctrl_lookup(struct amp_mgr *mgr, u8 id);
+void amp_ctrl_list_flush(struct amp_mgr *mgr);
+
 struct hci_conn *phylink_add(struct hci_dev *hdev, struct amp_mgr *mgr,
 			     u8 remote_id);