I’m not sure i agree, or perhaps i’m not following. I have a RHRC-11002 which is listed as an RC6 (sticker on back) MCE remote with a USB dongle receiver. It did “just work” after installing OSMC. However, after choosing the rc6-mce-lircd.conf file, i started getting the multiple presses. I eventually got it to stop (check this out to see what i did Multiple remote presses in 2015.07-1 - #6 by Gmoney ). However, i did enable the keymap editor and played around with it. It created ~/.kodi/userdata/keymaps/gen.xml . In that file it looked like it was remapping keys on a keyboard… not like any of the stuff i’ve seen for lirc config files.
What is the Kodi config file you are referring to?