Closest thing I could find was the same code for PMD Red Rescue Team for the GBA. If you have a copy, your save should work when transferred to either.
374DEF73 1CE34A32
6E8D9477 2F61E214
If you have the tools for save editing, I have an unreleased (and unfinished) version of Sky Editor that could add a Keckleon.
I'll see if I can get another preview ready. In the mean time, do you have a save with another Pokémon in the same friend area? (Pokémon are stored as a list, and the friend area a Pokémon is in is based on the location in that list, and I don't know the ordering yet.)