Merge "legacy: Re-include hci/include/hci_layer.h" am: 7cee6bc3

#include <base/callback.h>

#include <base/location.h>

#include <stdbool.h>

#include "bt_types.h"

#include "osi/include/allocator.h"

#include "osi/include/fixed_queue.h"

#include "osi/include/future.h"

#include "osi/include/osi.h"

#include "osi/include/osi.h"  // INVALID_FD

#include "stack/include/bt_types.h"

static const char HCI_MODULE[] = "hci_module";