Add driver for LCD display

I have a RasBerry Pi 3 B with LibreELEC running and I bought a "Kuman 3.5 inch 320*480 Resolution Touch Screen TFT LCD Display". Now I think I have to add the driver to LibreELEC because in the list of drivers I can choose in the LibreELEC setting I don`t find the driver for my LCD. Together with the LCD also the driver ws delivered as a gz file. Can someone help me to activate my LCD?