dt-bindings: Input: Add Wacom W9000-series penabled touchscreens

dt-bindings: Input: Add Wacom W9000-series penabled touchscreens

Add bindings for Wacom W9002 and two Wacom W9007 variants which can be
found in tablets.

W9002, W9007A LT03, and W9007A V1 differ in the length of the return
message containing coordinates, distance, pressure and button status.

Co-developed-by: Ferass El Hafidi <funderscore@postmarketos.org>
Signed-off-by: Ferass El Hafidi <funderscore@postmarketos.org>
Signed-off-by: Hendrik Noack <hendrik-noack@gmx.de>
Acked-by: Conor Dooley <conor.dooley@microchip.com>
Link: https://patch.msgid.link/20260528074818.12151-2-hendrik-noack@gmx.de
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>