[$] Not-a-GPU accelerator drivers cross the line

As a general rule, the kernel community is happy to merge working devicedrivers without much concern for the availability of any associateduser-space code. What happens in user space is beyond the kernel's concernand unaffected by the kernel's license. There is an exception, though, inthe form of drivers for graphical processors (GPUs), which cannot be mergedin the absence of a working, freely-licensed user-space component. Thequestion of which drivers are subject to that rule has come up a few timesin recent years; that discussion has now come to a decision point with aneffort to block someHabana Labs driver updates from entry into the 5.15 kernel.