leds: ktd2692: Add GPIOLIB dependency

leds: ktd2692: Add GPIOLIB dependency

The expresswire module requires gpiolib, so anything selecting it
also needs this dependency:

WARNING: unmet direct dependencies detected for LEDS_EXPRESSWIRE
  Depends on [n]: NEW_LEDS [=y] && GPIOLIB [=n]
  Selected by [y]:
  - LEDS_KTD2692 [=y] && NEW_LEDS [=y] && LEDS_CLASS_FLASH [=y] && OF [=y]

Fixes: e59a15af7aa6 ("leds: ktd2692: Convert to use ExpressWire library")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Daniel Thompson <daniel.thompson@linaro.org>
Link: https://lore.kernel.org/r/20240213165602.2230970-1-arnd@kernel.org
Signed-off-by: Lee Jones <lee@kernel.org>