New comment by Piraty on void-packages repository

https://github.com/void-linux/void-packages/pull/24026#issuecomment-733547216

Comment:
this at least needs to be restricted to `archs="i686* x86_64*"` for musl, since [src/ddcpci/sis.c](https://github.com/ddccontrol/ddccontrol/blob/f3d003f63aaa0407d3147b04848e0722f78695d5/src/ddcpci/sis.c#L68) uses `inb`/`outb` which musl only defines for x86* (`arch/{i386,x32,x86_64}/bits/io.h`)