Summary

1. Removed the bogus(?) 512kb memory option for Trio64V+ VLB
2. Correct the names for some video cards

Checklist

• Closes #xxx
• I have tested my changes locally and validated that the functionality works as intended
• I have discussed this with core contributors already
• This pull request requires changes to the ROM set
  • I have opened a roms pull request - https://github.com/86Box/roms/pull/changeme/
• This pull request requires changes to the asset set
  • I have opened an assets pull request - https://github.com/86Box/assets/pull/changeme/

References

STB Systems PowerGraph 64 Video VL at The Retro Web (it does not have its 512kb memory option)

Notes

TODO: to add more S3-based video cards (possibly?) later.