[coreboot] blobs: is there a reason for intel microcode version 20150121?

[Martin Kepplinger]

Since there are many releases of Intel's cpu microcode since 2015-01, I 
was wondering if
there's a reason why coreboot, if at all, uses this one.

I know very little about it really. It may well be potentially bad to 
simply use the latest version,
but in case it's really only because nobody did it, I might prepare a 
patch to use
downloadmirror.intel.com/27337/eng/microcode-20171117.tgz instead 
(someday, after
I testing it on my device).

thanks
                                          martin