Bluetooth: Move A2MP_FEAT_EXT declaration into A2MP source

The A2MP_FEAT_EXT declaration has a single user in a2mp.c and thus
just move it there.
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>

net/bluetooth/a2mp.c

@@ -19,6 +19,8 @@
 #include "a2mp.h"
 #include "amp.h"
 
+#define A2MP_FEAT_EXT	0x8000
+
 /* Global AMP Manager list */
 LIST_HEAD(amp_mgr_list);
 DEFINE_MUTEX(amp_mgr_list_lock);

net/bluetooth/a2mp.h

@@ -17,8 +17,6 @@
 
 #include <net/bluetooth/l2cap.h>
 
-#define A2MP_FEAT_EXT	0x8000
-
 enum amp_mgr_state {
 	READ_LOC_AMP_INFO,
 	READ_LOC_AMP_ASSOC,