[coreboot] coreboot V2 with crypto library

[ron minnich]

This is interesting, it's the second note today speculating that we
need to compile with -lgcc.

I think that's a bad approach, as we learned in the early days. It is
too easy to link in libgcc code that expects a full OS environment and
not realize you have done so.

I think you should use the 'ar' tool to extract the .o files you need
from libgcc and link against those.

ron