Patch merged into coreboot/master: AMD ROMSIG: Only check location if ROMSIG is used

the following patch was just integrated into master:
commit e0334e82960aa72c602686f1f8a840002bc3a73a
Author: Martin Roth 
Date:   Tue Aug 11 09:05:42 2015 -0600

AMD ROMSIG: Only check location if ROMSIG is used

The location of the AMD ROMSIG binary was being checked and warnings
    were being printed even when the ROMSIG file wasn't being used.

These false warnings are avoided by moving the warnings into the
    block where the CBFS file for the ROMSIG is generated.

Change-Id: Ie44a2ad97ff3b15df6dc9b8166992de6ed837997
    Signed-off-by: Martin Roth 
    Reviewed-on: http://review.coreboot.org/11161
    Tested-by: build bot (Jenkins)
    Reviewed-by: Paul Menzel 
    Reviewed-by: Stefan Reinauer

See http://review.coreboot.org/11161 for details.

-gerrit