reset: gpio: Fix missing gpiolib dependency for GPIO reset controller

The GPIO reset controller uses gpiolib but there is no Kconfig
dependency reflecting this fact, add one.

With the addition of the controller to the arm64 defconfig this is
causing build breaks for arm64 virtconfig in -next:

aarch64-linux-gnu-ld: drivers/reset/core.o: in function `__reset_add_reset_gpio_lookup':
/build/stage/linux/drivers/reset/core.c:861:(.text+0xccc): undefined reference to `gpio_device_find_by_fwnode'

Fixes: cee544a40e44 ("reset: gpio: Add GPIO-based reset controller")
Reviewed-by: Krzysztof Kozlowski <[e-mail]>
Signed-off-by: Mark Brown <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Philipp Zabel <[e-mail]>

drivers/reset/Kconfig

···
 
 config RESET_GPIO
 	tristate "GPIO reset controller"
+	depends on GPIOLIB
 	help
 	  This enables a generic reset controller for resets attached via
 	  GPIOs.  Typically for OF platforms this driver expects "reset-gpios"