[PATCH 5/5] mfd: axp20x-i2c: Do not define 'struct acpi_device_id' when !CONFIG_ACPI

[Lee Jones]

Since ACPI_PTR() is used to NULLify the value when !CONFIG_ACPI,
struct axp20x_i2c_acpi_match becomes defined by unused.

This squashes the current W=1 kernel builds warning:

 drivers/mfd/axp20x-i2c.c:82:36: warning: ‘axp20x_i2c_acpi_match’ defined but not used [-Wunused-const-variable=]

Cc: Chen-Yu Tsai <wens at csie.org>
Cc: Carlo Caione <carlo at caione.org>
Signed-off-by: Lee Jones <lee.jones at linaro.org>
---
 drivers/mfd/axp20x-i2c.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/mfd/axp20x-i2c.c b/drivers/mfd/axp20x-i2c.c
index 14f9df74f855c..3dd650125c239 100644
--- a/drivers/mfd/axp20x-i2c.c
+++ b/drivers/mfd/axp20x-i2c.c
@@ -79,6 +79,7 @@ static const struct i2c_device_id axp20x_i2c_id[] = {
 };
 MODULE_DEVICE_TABLE(i2c, axp20x_i2c_id);
 
+#if IS_ENABLED(CONFIG_ACPI)
 static const struct acpi_device_id axp20x_i2c_acpi_match[] = {
 	{
 		.id = "INT33F4",
@@ -87,6 +88,7 @@ static const struct acpi_device_id axp20x_i2c_acpi_match[] = {
 	{ },
 };
 MODULE_DEVICE_TABLE(acpi, axp20x_i2c_acpi_match);
+#endif
 
 static struct i2c_driver axp20x_i2c_driver = {
 	.driver = {
-- 
2.25.1