I am trying to build coreboot image for MbMax along with TXE module

I selected under menuconfig --> chipset --> Add Inteldescriptor.bin file --> Add Intel ME/TXE firmware. 

When I do a make, I get the error: 
DD         Adding Intel Firmware Descriptor
make: *** [add_intel_firmware] Error 1

I did a  git clone http://review.coreboot.org/p/blobs.git  to get the blobs. But it does not contain anything for MbMax.

I followed the instructions here http://wiki.minnowboard.org/Coreboot. It explains to use ifdtool to extract TXE firmware image. Is this the image that should be present in the blobs/mainboard/intel/?  If not how to get the it? 

Thanks,
Supriti