[coreboot] Patch merged into coreboot/master: 2fd6df0 If the memory mapped UART isn't present, leave it out of the cb tables.

the following patch was just integrated into master:
commit 2fd6df0f261f0f9d587de15cb9e5861c3ff6811a
Author: Gabe Black 
Date:   Wed Oct 5 01:57:03 2011 -0700

If the memory mapped UART isn't present, leave it out of the cb tables.

This way u-boot won't try to use a UART that isn't plugged in.

Change-Id: I9a3a0d074dd03add8afbd4dad836c4c6a05abe6f
    Signed-off-by: Gabe Black

Reviewed-By: Patrick Georgi  at Fri Mar  9 09:59:02 2012, giving +2
See http://review.coreboot.org/729 for details.

-gerrit