Patch merged into coreboot/master: ac16405 usbdebug: Fix boards without EARLY_CBMEM_INIT

the following patch was just integrated into master:
commit ac164057993e9edbfe78537efbbc9ef5f75cd67c
Author: Kyösti Mälkki 
Date:   Fri Oct 11 21:14:59 2013 +0300

usbdebug: Fix boards without EARLY_CBMEM_INIT

The main usbdebug file lib/usbdebug.c was removed from romstage
    build with commit f8bf5a10 but the chipset-specific parts were not,
    leading to unresolved symbol errors for AMD platforms.

Add a silent Kconfig variable USBDEBUG_IN_ROMSTAGE for convenient
    use of this feature.

Change-Id: I0cd3fccf2612cf08497aa5c3750c89bf43ff69be
    Signed-off-by: Kyösti Mälkki 
    Reviewed-on: http://review.coreboot.org/3983
    Tested-by: build bot (Jenkins)
    Reviewed-by: Aaron Durbin

See http://review.coreboot.org/3983 for details.

-gerrit