[coreboot] a note on dtc

[ron minnich]

I just did a quick check -- you can too --
svn diff -r2 util/dtc

There are about 1984 lines of changes, most of them to flattree.c

I doubt that cutting over to the newest dtc would be hard. I will try
to create a diff and annotate my changes for anyone who cares.

The messy modified code in there is my fault. Sorry. It's a
combination of not really understanding a lot of things, esp. way back
in 2007 when this all began.

ron