dt-bindings: gpio: vf610: add ngpios and gpio-reserved-ranges

Add optional ngpios and gpio-reserved-ranges property.

Reviewed-by: Frank Li <Frank.Li@nxp.com>
Signed-off-by: Haibo Chen <haibo.chen@nxp.com>
Acked-by: Conor Dooley <conor.dooley@microchip.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20250520-gpio-dts-v3-1-04771c6cf325@nxp.com


Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>