[coreboot] [flashrom] unusual SST39SF020 chip

[Andriy Gapon]

First of all, I have a very rough (and ugly!) patch that makes flashrom 
work on FreeBSD. I tried it for reading BIOS image and it worked.

I have an old system with MP2-BX-X, please see some description here:
http://www.geocities.com/SiliconValley/3686/delta_mp2.html
It is based on 440BX chipset.

Visually I was able to identify that BIOS flash chip is SST39SF020, but 
flashrom didn't initially recognize it.
Some debugging showed that it has JEDEC ids 0x25 for vendor and 0xE5 for 
device. Very unusual. So I decided to let you know.

The data that flashrom read are very similar to the data in vendor 
provided bios .bin. There are differences in a chunk of about 12k size, 
I guess this is where bios stored some config data.