Patch merged into filo/master: dfc652a Fix some compiler warnings

the following patch was just integrated into master:
commit dfc652ad783639baabc71e83b2ac76a583c08975
Author: Mathias Krause 
Date:   Tue Mar 6 16:10:27 2012 +0100

Fix some compiler warnings

The makefile cleanup brought up quite a few compiler warnings about
    unused functions and/or variables, undefined behaviour, missing return
    values and type mismatches. Fix those.

Change-Id: I0e01b5fafd9d7594ec41c01d849f6ef9a2d56299
    Signed-off-by: Mathias Krause

Build-Tested: build bot (Jenkins) at Wed Mar  7 16:43:55 2012, giving +1
Reviewed-By: Stefan Reinauer  at Wed Mar  7 17:45:23 2012, giving +2
See http://review.coreboot.org/747 for details.

-gerrit