Patch merged into coreboot/master: d7134e0 pc80/mc146818rtc: Return an error code rather than an integer

the following patch was just integrated into master:
commit d7134e06b1b1ac21108b23438604b7385e4a43fa
Author: Alexandru Gagniuc 
Date:   Sat Nov 23 18:54:44 2013 -0600

pc80/mc146818rtc: Return an error code rather than an integer

Do not return hardcoded numerical values to communicate succes/failure, but
    instead use an enumeration.

Change-Id: I742b08796adf136dce5984b702533f91640846dd
    Signed-off-by: Alexandru Gagniuc 
    Reviewed-on: http://review.coreboot.org/4265
    Tested-by: build bot (Jenkins)
    Reviewed-by: Ronald G. Minnich

See http://review.coreboot.org/4265 for details.

-gerrit