The recent opkg-utils change didn't update all the packages since its
marked as ABISAFE (and has to be due to update-alternatives).
Fix a minor import issue to avoid multiple imports of glob which
also causes packages to re-generate.
(From OE-Core rev: ef24a545d11febb96d1c0f02c60d9701295ef592)
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>