Apply patch from Taras Kondratiuk <takondra@cisco.com> to gcc 8.x too.
Normal gcc-cross has build-id feature enabled by default, so most of
target binaries has build-id. But libc (glibc, musl) doesn't have
build-id, because it is built with gcc-cross-initial.
Build-id is a useful feature, so enable it for gcc-cross-initial too.
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
