[flashrom] SST SST29EE020A

[Anders Jenbo]

read and probe has been confirmed by others.
I have also tested write and it seams to work just fine (boots fine
after flashing the BISO from another chip as well as coreboot).
I do tend to get validation errors if the system is to active during
flashing (it's a 400Mhz P2 running Ubuntu 10.04 beta2). Disabling
"verbose > file" seams to also lower the validation errors.

I have attached the output from the different commands -V, -rV and -wV

Hope this helps

-Anders