dt-bindings: input: touchscreen: goodix: Drop 'interrupts' requirement

Since commit 409fe0cea366 ("Input: goodix - add support for polling mode")
the interrupts property is optional, since at least the Linux kernel driver
supports also polling mode.

Signed-off-by: Marek Vasut <[e-mail]>
Acked-by: Conor Dooley <[e-mail]>
Reviewed-by: Geert Uytterhoeven <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Dmitry Torokhov <[e-mail]>

Documentation/devicetree/bindings/input/touchscreen/goodix.yaml

···
 required:
   - compatible
   - reg
-  - interrupts
 
 examples:
   - |