[LinuxBIOS] maturing flashrom utility build

[Stefan Reinauer]

* Ronald G Minnich  [051201 04:59]:
> this is the second report of flashrom not compiling. Can you send in 
> your error messages, and uname -a, and what distro this is?

I have written the following small patch for the flashrom utility
Makefile. It will check for pciutils installation before compiling
anything and print an explicit error message if pciutils is not found.

This is much easier to parse than the half screen gcc errors.

Issue 40.

Commit?

Stefan