Merge "btaa: do not initialize btaa module if init flag set to false"

#include "btaa/include/activity_attribution.h"

#include "btif/include/btif_common.h"

#include "gd/common/init_flags.h"

#include "stack/include/btu.h"

using base::Bind;

  ~ActivityAttributionInterfaceImpl() override = default;

  void Init(ActivityAttributionCallbacks* callbacks) override {

    if (!bluetooth::common::InitFlags::BtaaHciLogEnabled()) {

      LOG(INFO) << __func__ << " BTAA not enabled!";

      return;

    }

    this->callbacks = callbacks;

    ActivityAttribution::Initialize(this);

  }