[coreboot] buildrom breakage

[Cristi Magherusan]

Hello,

Unfortunatelly it seems that r210 (the kconfig version bump) introduced
a serious breakage in buildrom.

This is a build log where you can see the failure:
http://pastebin.com/f72bc591f

Steps to reproduce:
get current buildrom from svn (any revision >r210 will do)
make menuconfig, select the LAB or Linux payload 
make
build failure occurs at the kernel

Expected result:
The kernel should build fine, like it does with r<=209