qemu supports these sound cards:

       -   Creative SoundBlaster 16 sound card

       -   ENSONIQ AudioPCI ES1370 sound card

       -   Intel 82801AA AC97 Audio compatible sound card

       -   Intel HD Audio Controller and HDA codec

       -   Adlib (OPL2) - Yamaha YM3812 compatible chip

       -   Gravis Ultrasound GF1 sound card

       -   CS4231A compatible sound card

out of these at least 82801AA AC97 and ES1370 are PCI devices that *can* be
connected to any system that emulates PCI bus including the ppc64 pSeries VM.

The openQA machines use 82801AA which is supported by CONFIG_SND_INTEL8X0.
AFAICT neither of these sound drivers is enabled on ppc64 and ppc64le.


I am not convinced any of these emulations is superior to the others so
enabling one should suffice for testing sound features in qemu.