Bluetooth: Move a2mp.h header file into net/bluetooth/

The a2mp.h header file is only used internally by the bluetooth.ko
module and is not a public API. So make it local to the core
Bluetooth module.

Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
diff --git a/net/bluetooth/hci_event.c b/net/bluetooth/hci_event.c
index 67316b3..bbe2d29 100644
--- a/net/bluetooth/hci_event.c
+++ b/net/bluetooth/hci_event.c
@@ -29,8 +29,8 @@
 #include <net/bluetooth/bluetooth.h>
 #include <net/bluetooth/hci_core.h>
 #include <net/bluetooth/mgmt.h>
-#include <net/bluetooth/a2mp.h>
 
+#include "a2mp.h"
 #include "amp.h"
 
 /* Handle HCI Event packets */