don't worry about that. Thomas Kleffel is unlikely to return to do anyHarald is 100% right. I have absolutely no time at all to maintain this driver and I haven't worked on it (or any other SD/MMC related stuff) for almost two years now.
active work on it (I know him personally), and the OpenMoko community
will inevitably rebase its patches based on whatever ends up in
mainline. So nobody is worried if you merge all that stuff into one
patch. It's probably polite to add the significant contributors (such
as yourself and myself) to the list of authors at the beginning of the
file though - given the amount of changes the driver has received
compared to Tomas' original.