toolchain-external: select netbsd-queue for musl toolchains
Following the introduction of the check that target packages must have
their Config.in option enabled, we started to see failures related to
netbsd-queue. Yann fixed the internal toolchain case in commit
e84fd04e88bcda2771847958b3b5153e476db45f. This commit fixes the
similar issue, but for the external toolchain case.
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Thomas Petazzoni