Summary

• Fix the "None" option not being translated in several places (FPU selection, host joystick selection, host serial port selection for serial passthrough)
• Make "POV # (X/Y axis)" translatable
• Add translations for "MiB" in the HDD table header for languages that require it

Checklist

• Closes #xxx
• I have discussed this with core contributors already
• This pull request requires changes to the ROM set

References

N/A