tslib incorrectly depends on evdev

#if !defined(QT_NO_EVDEV) && !defined(Q_OS_ANDROID)
    m_kbdMgr = new QEvdevKeyboardManager(QLatin1String("EvdevKeyboard"), QString() /* spec */, this);
    new QEvdevMouseManager(QLatin1String("EvdevMouse"), QString() /* spec */, this);
#ifndef QT_NO_TSLIB
    const bool useTslib = qEnvironmentVariableIntValue("QT_QPA_EGLFS_TSLIB");
    if (useTslib)
        new QTsLibMouseHandler(QLatin1String("TsLib"), QString() /* spec */);
    else
#endif // QT_NO_TSLIB
        new QEvdevTouchManager(QLatin1String("EvdevTouch"), QString() /* spec */, this);
#endif