-These things will change in future udev versions:
- o make DRIVER== to match only the event device
- (DRIVERS must be used, we currently translate it to DRIVERS and print
- a warning if DRIVER is used)
-
- o warn if PHYSDEV* keys are used in ENV keys
- (they are deprecated and will be removed from a future kernel)
-
- o warn if "device/" is used in a ATTR{}, ATTRS{}, $attr{} key
- (the device link must not be used in rules or tools, udev resolves
- the link and makes the devices available as parents, which can
- be matched with the normal keys)