[coreboot] Patch merged into coreboot/master: 1498205 Add config_enabled() from Linux

[gerrit at coreboot.org]

the following patch was just integrated into master:
commit 1498205f84239aa45a50b8d31ca56e88bcd21a72
Author: Patrick Georgi <patrick at georgi-clan.de>
Date:   Sat May 5 15:11:22 2012 +0200

    Add config_enabled() from Linux
    
    This change is taken from Linux. It allows to check for Kconfig
    definitions in the preprocessor and source code using the same
    idiom.
    
    Long term plan is to remove our Kconfig hack to #define values to 0,
    and this helps.
    
    This includes a tiny modification to the macros to fix romcc support.
    
    Change-Id: I0fddbea8c8ca215cf226acf39cb329b0ba0445a5
    Signed-off-by: Patrick Georgi <patrick at georgi-clan.de>

Build-Tested: build bot (Jenkins) at Sun May  6 10:02:57 2012, giving +1
See http://review.coreboot.org/1005 for details.

-gerrit