fix(ble/bluedroid): Fixed BLE no data length change event

components/bt/host/bluedroid/stack/btm/include/btm_int.h

@@ -970,6 +970,8 @@ typedef struct {
 typedef struct{
   //connection parameters update callback
   tBTM_UPDATE_CONN_PARAM_CBACK *update_conn_param_cb;
+  // setting packet data length callback
+  tBTM_SET_PKT_DATA_LENGTH_CBACK *set_pkt_data_length_cb;
 }tBTM_CallbackFunc;
 
 extern tBTM_CallbackFunc conn_param_update_cb;