bitbake.conf: Pass -D option to ranlib for determisim

Add the -D option to BUILD_RANLIB so that deterministic archives
are built for native/cross output. This improves the changes of hash
equivalence matches and hence build artefact reuse.

We don't need this in the target case since we compile binutils-cross
with an option making this the default.

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>