Updates in github.com/awilliam code

The code in github.com/awilliam repository has been updated:

Before the update, when only using asus-switcheroo to power off the
discrete graphics card, it wasn't uncommon for the system to
eventually lock up. This seems to be the result of the nouveau driver
getting a -1 interrupt back and killing the system. The jprobes and
kretprobes code re-request it appropriately.