[PATCH] irqchip: meson-gpio: mark OF related data as maybe unused

[Krzysztof Kozlowski]

The driver can be compile tested with !CONFIG_OF making certain data
unused:

  drivers/irqchip/irq-meson-gpio.c:153:34: error: ‘meson_irq_gpio_matches’ defined but not used [-Werror=unused-const-variable=]

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski at linaro.org>
---
 drivers/irqchip/irq-meson-gpio.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/irqchip/irq-meson-gpio.c b/drivers/irqchip/irq-meson-gpio.c
index 2aaa9aad3e87..7da18ef95211 100644
--- a/drivers/irqchip/irq-meson-gpio.c
+++ b/drivers/irqchip/irq-meson-gpio.c
@@ -150,7 +150,7 @@ static const struct meson_gpio_irq_params s4_params = {
 	INIT_MESON_S4_COMMON_DATA(82)
 };
 
-static const struct of_device_id meson_irq_gpio_matches[] = {
+static const struct of_device_id meson_irq_gpio_matches[] __maybe_unused = {
 	{ .compatible = "amlogic,meson8-gpio-intc", .data = &meson8_params },
 	{ .compatible = "amlogic,meson8b-gpio-intc", .data = &meson8b_params },
 	{ .compatible = "amlogic,meson-gxbb-gpio-intc", .data = &gxbb_params },
-- 
2.34.1