Patch merged into coreboot/master: x86 makefile: Use preprocessed linker files

the following patch was just integrated into master:
commit ac630f7070bba6a39d6778ae437cd52085a68bf5
Author: Marc Jones 
Date:   Tue Jun 30 15:46:49 2015 -0600

x86 makefile: Use preprocessed linker files

The top level Makefile runs the $stage-src .ld scripts through
    the preprocessor and puts them in $(obj). Use the preprocessed
    .ld files and cat them together into x86 romstage_null.ld.

Change-Id: If71240fbf7231df2b1333a1f8e5160cb8694f6ce
    Signed-off-by: Marc Jones 
    Reviewed-on: http://review.coreboot.org/10743
    Tested-by: build bot (Jenkins)
    Reviewed-by: Aaron Durbin 
    Reviewed-by: Stefan Reinauer

See http://review.coreboot.org/10743 for details.

-gerrit