[coreboot-gerrit] Patch merged into coreboot/master: 8659e40 CBMEM console: Fix and enhance pre-RAM support

the following patch was just integrated into master:
commit 8659e4072e19130099ac4a81b204d594a6d3fb7d
Author: Kyösti Mälkki 
Date:   Sun Dec 21 08:55:47 2014 +0200

CBMEM console: Fix and enhance pre-RAM support

Use the value of CONSOLE_PRERAM_BUFFER_SIZE to determine if we can
    do CBMEM console in bootblock and romstage. Kconfig forces it to zero
    if _BASE is unset or we cannot do CAR migration on x86.

Add CBMEM console to bootblock, except for x86. Only one of bootblock
    and romstage clears the pre-RAM buffer.

To start with empty console log on S3 wakeup, ramstage now clears
    previous contents of CBMEM buffer if there was no pre-RAM buffer.

Unify Kconfig variable naming.

TODO: ARM configurations do not define PRERAM_BUFFER_BASE values.

Change-Id: I70d82da629529dbfd7bc9491223abd703cbc0115
    Signed-off-by: Kyösti Mälkki 
    Reviewed-on: http://review.coreboot.org/7862
    Tested-by: build bot (Jenkins)
    Reviewed-by: Aaron Durbin

See http://review.coreboot.org/7862 for details.

-gerrit