Adding better S3C2410 support to u-boot

Starting today, I'm working on adding NAND controller (and Steppingstone), as well as frame buffer and USB host + device controller support to the u-boot boot loader.

For some strange reason I'm having quite a bit of trouble wit all of these tasks, maybe I'm misreading the documentation, I'm missing some errata or it's plain old stupidity. Especially stuff like the NAND controller driver are supposed to be extremely easy and fast tasks to implement, and I'm already spending way too many hours on a seemingly way too trivial task :(

Let's hope there is some progress soon...