main/postmarketos-cros-common: add makedepends

Fill out makedepends, so pmbootstrap and bpo know that these packages need to be built before building postmarketos-cros-common, because it has subpackages depending on these packages. Without this, bootstrapping v24.12 currently fails: https://builds.sr.ht/~postmarketos/job/1381582

This is intended behavior, abuild works the same way: https://gitlab.alpinelinux.org/alpine/abuild/-/issues/10138