[flashrom] [RFC] Can flashrom be configured and built as a programmer only tool

[Bao, Zheng]

Since the Dediprog can work now, if I just want to use flashrom as a
programmer interface, I may erase the host BIOS accidently. I think if
the flashrom is built without the self-programming feature by some easy
settings, I don't have to worry about it.

Is it reasonable?

Zheng