Switch application usage to digitizer for non-display tablets

[spbnick]

The (incorrect) "Pen" (0x02) application usage used in replacement report descriptors throughout the drivers leads to all tablets recognized as a "direct" input device (i.e. a tablet monitor) by recent kernels, which messes up desktop environments.

See https://lore.kernel.org/linux-input/f39ce5d5-bd5b-bd3f-3ea2-9b2a89ba1eb1@gmail.com/

Replace the application usage with "Digitizer" (0x01) for each non-display graphics tablet.