[coreboot] [PATCH] libpayload: Update kconfig to a much more recent version

[Uwe Hermann]

See patch.

This also changes libpayload to put all *.o files into build/ as our
other stuff also does (i.e. not have *.o files in the src dir).

On a related note, here's a quick overview of all our kconfig copies:

- coreinfo:    RECENT (03/2008)
 - buildrom:    RECENT (03/2008)
 - coreboot-v3: OLD    (02/2006)
 - libpayload:  OLD    (???)
   (but this patch brings it to the state of 03/2008)

I'll prepare a patch for v3 also, then we have all our kconfigs at a
reasonably up-to-date state and at the _same_ state for all our projects.

Did I forget some other kconfig copy we use?

Uwe.