Patch merged into coreboot/master: crossgcc: Enable powerpc64-linux target without ppc64-linux headers

the following patch was just integrated into master:
commit 0a97d7eeba244b3a18249d07995dcfa884c14920
Author: Patrick Georgi 
Date:   Mon Jan 25 09:51:22 2016 +0100

crossgcc: Enable powerpc64-linux target without ppc64-linux headers

It may still fail on non-Linux, and the compiler may do fancy things,
    but it builds.

Change-Id: If3456f5fef8d01082a49978dc7cda5450f96f5cc
    Signed-off-by: Patrick Georgi 
    Reviewed-on: https://review.coreboot.org/13416
    Tested-by: build bot (Jenkins)
    Reviewed-by: Ronald G. Minnich 
    Reviewed-by: Timothy Pearson

See https://review.coreboot.org/13416 for details.

-gerrit