Makefile: Fix ordering for (update-)packages

[ivy]

Summary

The (update-)packages targets require buildworld and buildkernel to
run first. Add some .ORDER statements to ensure this happens.

This fixes 'make -j8 buildworld buildkernel packages'.

PR: 289969
Reported by: yasu
MFC after: 3 days

[yasu]

I confirmed make -j 8 buildworld buildkernel update-packages works as is expected by applying the diff.