sdk,basesdk: Fix qemu-user-static binfmt registration

Running the devroot and building images for foreign architectures from the SDK relies on the binfmt support in the kernel to run foreign binaries via qemu-user-static.

However, qemu-user-static was being installed before the binfmt-support package, so it was not registering itself as an interpreter.

Fix it by explicitly listing binfmt-support in the packages to install in the same run as qemu-user-static (via debos).