evdev: ignore tablet pad devices explicitly
We don't have real support for them yet but they have the ID_INPUT_TABLET tag set. Ignore them explicitly before someone thinks they're already working. Signed-off-by:Peter Hutterer <peter.hutterer@who-t.net> Reviewed-by:
Hans de Goede <hdegoede@redhat.com> Reviewed-and-tested-by:
Benjamin Tissoires <benjamin.tissoires@gmail.com>