wacom: Pick libwacom's Generic Pen stylus if tool ID is 0
We generally use tool ID 0 if the ID is actually unknown, libwacom however assigns 0xfffff to such device. Make it sure we find the "Generic Pen" stylus description in that case.
We generally use tool ID 0 if the ID is actually unknown, libwacom however assigns 0xfffff to such device. Make it sure we find the "Generic Pen" stylus description in that case.