Patch merged into coreboot/master: 8adf7a2 Log device path into CMOS during probe stages

the following patch was just integrated into master:
commit 8adf7a2c50dcb3a7f09b66c1f3918ab195d8c5ec
Author: Duncan Laurie 
Date:   Mon Jun 10 10:34:20 2013 -0700

Log device path into CMOS during probe stages

One of the most common hangs during coreboot execution
    is during ramstage device init steps.  Currently there
    are a set of (somewhat misleading) post codes during this
    phase which give some indication as to where execution
    stopped, but it provides no information on what device
    was actually being initialized at that point.

This uses the new CMOS "extra" log banks to store the
    encoded device path of the device that is about to be
    touched by coreboot.  This way if the system hangs when
    talking to the device there will be some indication where
    to investigate next.

interrupted boot with reset button and
    gathered the eventlog after several test runs:

26 | 2013-06-10 10:32:48 | System boot | 120
    27 | 2013-06-10 10:32:48 | Last post code in previous boot | 0x75 | Device Initialize
    28 | 2013-06-10 10:32:48 | Extra info from previous boot | PCI | 00:16.0
    29 | 2013-06-10 10:32:48 | Reset Button
    30 | 2013-06-10 10:32:48 | System Reset

Change-Id: I6045bd4c384358b8a4e464eb03ccad639283939c
    Signed-off-by: Duncan Laurie 
    Reviewed-on: https://gerrit.chromium.org/gerrit/58105
    Reviewed-on: http://review.coreboot.org/4230
    Tested-by: build bot (Jenkins)
    Reviewed-by: Alexandru Gagniuc

See http://review.coreboot.org/4230 for details.

-gerrit