[coreboot] CBFS size

[John Lewis]

Another question - At the moment CBFS size seems to be restricted to a 
maximum of 4 MB in an 8 MB ROM, and I'm wondering if there is any way to 
get around the "power of 2" and use a 6 MB CBFS? I've disabled the 
check, but it results in floppy images which fail to decompress/extract 
correctly, presumably due to some technical alignment reason.

Thanks in advance,

John.