Amiga (MiniMig core) - support for multiple configs

[TheTurtleIsHungry]

The Amiga is different from most computer/console platforms on MiSTer, in that there are many possible amiga configurations. However, there are 2 main ones, which would cover the vast majority of games:

1. Amiga 500(OCS) with 1mb
2. Amiga 1200(AGA) with 2mb The Amiga (MiniMig) core has configurations for both already by default ("000/OCS-A500/P 1M Kick13.rom" and "020/AGA/P 2m Kick30.rom"). If there was a way to put games in for each type, that would help make them boot better. You could use folder (A500 vs A1200) or file naming. Is there a way to pass in the config used into the core, or does that require support by the core builders?