[coreboot] v3 make distclean broken

[Carl-Daniel Hailfinger]

Hi,

I have a v3 tree (svn HEAD) which refuses to run "make clean" or "make
distclean". Steps to reproduce: Simply drop the attached .config in any
recent v3 tree, then try to run "make clean".

/sources/tmptrees/corebootv3-car_gas_bug_workaround> make distclean
Makefile:113: mainboard//Makefile: No such file or directory
make: *** No rule to make target `mainboard//Makefile'.  Stop.

Removing .config fixes it. I'd appreciate hints or fixes.

Regards,
Carl-Daniel