[Feature req] Limit number of VMUs on screen

[user18081972]

Is your feature request related to a problem? Please describe.
I would like it if i could hide the VMUs for port b c an d, and only show port a's VMU display.

Describe the solution you'd like
Literally any option to enable this, even if it was only in emu.cfg

Describe alternatives you've considered
I tried looking for an existing option but couldnt find one.
I do own physical dreamcast controllers, i dont know if there is an adapter that allows you to show the VMU display data on the real Dreamcast controller with Flycast, if so please do tell me, that could work too.

Additional context

[flyinghead]

There's no such option so Flycast will either display all VMUs or none.
However the obvious workaround is to unplug the controllers or VMUs you don't want to see. This can be done while the game is running, like on original hardware.