[coreboot] Updated coreboot build environment for Windows

[Peter Stuge]

Peter Stuge wrote:
> First, commit and push the change to the submodule repo. Do this by
> changing the file in your working directory as usual, committing as
> usual and then pushing that commit through whatever channel applies
> to that particular repository. (Maybe also our gerrit. I don't know.)

Patrick Georgi wrote:
> ... and ideally also push it upstream.
> 
> They want it as mail, linux-style to linux-tegra at vger.kernel.org,
> with some note that it's for the cbootimage repository.

Right, that's the "channel" I was refering to. I didn't know if this
tool is ours or from elsewhere.


//Peter