Well, I got the info from Nicovideo's dictionary, where it states,
which means "Funkot is fast dance music which originated in Indonesia." Later on in the same page, it states
"それ以外にもFunky House Kota、Indonesia House、House、Funkyなど、いくつかこのジャンルを指す語があったが、現在ではFunkotがほぼ正式名称として扱われて
いる。", which basically states that Funkot is referred to as Funky House Kota, Indonesia House, House, and Funky, but Funkot is pretty much the official name. In addition, a quick Google search gives a number of hits relating Indonesia and Funky Kota.
Having done this research, I assumed it was Indonesian. My apologies if I am mistaken. However, it is also entirely possible that the two countries share the same genre of music and may have caused citizens of both countries to believe that they were the source of the genre.
It is ALSO possible, however, that the Japanese term is a misnomer in attributing a genre of music, much as Americans have done in naming "French" fries or the "Spanish" flu.
TL;DR: Either the Japanese are silly or Funky Kota is Indonesian AND Malaysian. Either way, I'm not going back to change it.