irqchip/mbigen: Fix compile warning when CONFIG_ACPI is disabled

Fix the following compile warning:

  drivers/irqchip/irq-mbigen.c:372:36: warning: ‘mbigen_acpi_match’ defined but not used [-Wunused-const-variable=]
   static const struct acpi_device_id mbigen_acpi_match[] = {
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20210519050455.1693953-1-yangyingliang@huawei.com

drivers/irqchip/irq-mbigen.c

@@ -273,6 +273,12 @@ static int mbigen_of_create_domain(struct platform_device *pdev,
 }
 
 #ifdef CONFIG_ACPI
+static const struct acpi_device_id mbigen_acpi_match[] = {
+	{ "HISI0152", 0 },
+	{}
+};
+MODULE_DEVICE_TABLE(acpi, mbigen_acpi_match);
+
 static int mbigen_acpi_create_domain(struct platform_device *pdev,
 				     struct mbigen_device *mgn_chip)
 {
@@ -369,12 +375,6 @@ static const struct of_device_id mbigen_of_match[] = {
 };
 MODULE_DEVICE_TABLE(of, mbigen_of_match);
 
-static const struct acpi_device_id mbigen_acpi_match[] = {
-	{ "HISI0152", 0 },
-	{}
-};
-MODULE_DEVICE_TABLE(acpi, mbigen_acpi_match);
-
 static struct platform_driver mbigen_platform_driver = {
 	.driver = {
 		.name		= "Hisilicon MBIGEN-V2",