Patch merged into coreboot/master: adc300d libpayload: Fix the logic for hardware-less serial consoles

the following patch was just integrated into master:
commit adc300d88b35ceafafb4d4b6426c6458dc46b685
Author: Dave Frodin 
Date:   Tue May 14 08:43:25 2013 -0600

libpayload: Fix the logic for hardware-less serial consoles

This fixes the configuration where serial console output is
    being sent to non-existant hardware to be captured with I/O
    trapping. In this configuration where there isn't serial
    hardware present we still want to init the consoles. We just
    never want to read non-existant hardware.

Change-Id: Ic51dc574b9c0df3f6ed071086b0fb2119afedc44
    Signed-off-by: Dave Frodin 
    Reviewed-on: http://review.coreboot.org/3249
    Tested-by: build bot (Jenkins)
    Reviewed-by: Ronald G. Minnich

See http://review.coreboot.org/3249 for details.

-gerrit