[coreboot] use libpayload in optionrom

[Jason Wang]

Hi all,
   I am trying to use libpayload in our optionrom, but does not work now...
The main difference between optionrom use its own ldscript and head asm
code. I main things I did now is
set up the stack and heap in the pci_rom.ld. and include the "libpayload.h"
and "libpayload-config.h" in the main.c.
it doesn't work when i am trying to print out message which use "
printf("hello optionrom")".
Is there any other things i should do?
All my source code was in
http://vps.dorilex.net/cgi-bin/gitweb.cgi?p=optionrom.git;a=summary
Need some help about this, thanks everyone...