Merge "btif_hf.cc : privatize phone number in log"

  if (index == 0) {

    ag_res.ok_flag = BTA_AG_OK_DONE;

  } else {

    std::string cell_number(number);

    BTIF_TRACE_EVENT(

        "clcc_response: [%d] dir %d state %d mode %d number = %s type = %d",

        index, dir, state, mode, number, type);

        index, dir, state, mode, PRIVATE_CELL(cell_number), type);

    int res_strlen = snprintf(ag_res.str, sizeof(ag_res.str), "%d,%d,%d,%d,%d",

                              index, dir, state, mode, mpty);

    if (number) {