Patch merged into coreboot/master: buildgcc: enable interwork/multilib for binutils

the following patch was just integrated into master:
commit 2fe2d3d7752bd65f87c4bada85853bf29c4278ba
Author: Stefan Reinauer 
Date:   Tue Apr 5 02:14:48 2016 -0700

buildgcc: enable interwork/multilib for binutils

Otherwise, on OS X, some architectures will fail
    to build libgcc (verified for ARM toolchain).

Change-Id: I8b58e0582596ad39cad92e9d478158c46a96a26e
    Signed-off-by: Stefan Reinauer 
    Reviewed-on: https://review.coreboot.org/14256
    Tested-by: build bot (Jenkins)
    Reviewed-by: Patrick Georgi

See https://review.coreboot.org/14256 for details.

-gerrit