Bluetooth: Add BT_HS config option

Move A2MP Module under BT_HS config option and allow
the user have flexible option to choose the feature only
they need

a2mp_discover_amp() & a2mp_channel_create() are a2mp module
entry point for master and slave, and this is dynamic
invoked depends on the userspace or remote request, then
we defined their implementation depends on BT_HS config

Signed-off-by: Arron Wang <arron.wang@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
diff --git a/net/bluetooth/a2mp.h b/net/bluetooth/a2mp.h
index 296f665..a4ff3ea 100644
--- a/net/bluetooth/a2mp.h
+++ b/net/bluetooth/a2mp.h
@@ -130,10 +130,29 @@
 #define A2MP_STATUS_SECURITY_VIOLATION		0x06
 
 struct amp_mgr *amp_mgr_get(struct amp_mgr *mgr);
+
+#if IS_ENABLED(CONFIG_BT_HS)
 int amp_mgr_put(struct amp_mgr *mgr);
 struct l2cap_chan *a2mp_channel_create(struct l2cap_conn *conn,
 				       struct sk_buff *skb);
 void a2mp_discover_amp(struct l2cap_chan *chan);
+#else
+static inline int amp_mgr_put(struct amp_mgr *mgr)
+{
+	return 0;
+}
+
+static inline struct l2cap_chan *a2mp_channel_create(struct l2cap_conn *conn,
+						     struct sk_buff *skb)
+{
+	return NULL;
+}
+
+static inline void a2mp_discover_amp(struct l2cap_chan *chan)
+{
+}
+#endif
+
 void a2mp_send_getinfo_rsp(struct hci_dev *hdev);
 void a2mp_send_getampassoc_rsp(struct hci_dev *hdev, u8 status);
 void a2mp_send_create_phy_link_req(struct hci_dev *hdev, u8 status);