Discard relative movement packets outside of [-127, 127] range to

Discard relative movement packets outside of [-127, 127] range to
prevent cursor jumps when using the trackpoint on some lenovo laptops.

Known affected models:
- Lenovo Thinkpad X13 Gen1
- Lenovo Thinkpad T14(s)
- Lenovo Thinkpad E15 Gen3
- Lenovo A475

With help from stsp@

OK stsp@ miod@ deraadt@ bru@