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

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 <marek.vasut+renesas@mailbox.org>
Acked-by: Conor Dooley <conor.dooley@microchip.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/20250904195727.168152-1-marek.vasut+renesas@mailbox.org
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>