i got past that error by editing config.txt
nano /boot/config.txt
at the end of the file add the following line
dtoverlay=lirc-rpi
i dont konow if its required but i chose to reboot as well after this by running
reboot
the previous commands were entered using a root console
so if the comands dont work you need to add
sudo
before each command
source https://github.com/OpenELEC/OpenELEC.tv/issues/3908