Found this very interesting blog entry by Nico Maas:
http://www.nico-maas.de/wordpress/?p=799Nico discribed how to compile OpenWRT Trunk with "official" Raspberry Pi Kernel 3.6.y
He wrote down his steps detailed and it should help us alot!
Unfortunately I do not own a Raspberry Pi to try it out, but you guys may look after it.
Cheers
Dat