I searched for "xfree86 lillilput" and got four threads (they'll probably be five now with this thread). this one contains some modelines, which is probably what you want.
I've been searching and found a few references to people saying it's been done, but nobody's posted an xorg.conf, and I can't seem to find the specs on this LCD. Anyone know the HorizSync and VertRefresh settings for a liliput 619gl?
Yup I've found some more info since then. The biggest problem turned out not the be the X config though, but the bios. On the EPIA M10000, X was just displaying garbage with the bios set to 'crt+lcd', changed it to just 'crt' and it works fine now.