Summary

Add the following HP Pavilion machines:

• [Socket 5 i430FX] HP Pavilion 50x0/70xx (Morrison32)
• [Socket 7 SV i430FX] HP Pavilion 51xx/7070/7090/71xx (Holly)
• [Socket 7 DV i430HX] HP Pavilion 73xx/74xx (Ruby USB)

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 - Add the ROMs for 3 HP Pavilion machines roms#432

References

Provide links to datasheets or other documentation that helped you implement this pull request.