[flashrom] SST29EE020 write verify

[Andrew Morgan]

Hi,

I have erased my flash chip, then written Coreboot back to it. Erase 
works (data read after a read was all 0xFF).
Write works, but it gives lots of messages saying that verify failed. At 
the end it says it verified ok, and flashrom -v says it verified ok, and 
the system still boots.
Logs attached.