binutils: fix for ld segfault for microblaze when --gc-sections is used

The workarounds for kmod/libnss can be removed when the patch is
applied and the autobuilder toolchains got rebuild.

kmod: 0d81107f
libnss: fceb1afd

Signed-off-by: Waldemar Brodkorb <wbx@openadk.org>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>