[PATCH] mfd/axp20x-i2c: Fix "CONFIG_ACPI" is not defined warning

[Axel Lin]

Fix below build warning:

drivers/mfd/axp20x-i2c.c:82:5: warning: "CONFIG_ACPI" is not defined, evaluates 
to 0 [-Wundef]
   82 | #if CONFIG_ACPI
      |     ^~~~~~~~~~~

Fixes: 20f359cb236b ("mfd: axp20x-i2c: Do not define 'struct acpi_device_id' 
when !CONFIG_ACPI")
Signed-off-by: Axel Lin <axel....@ingics.com>
---
 drivers/mfd/axp20x-i2c.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/mfd/axp20x-i2c.c b/drivers/mfd/axp20x-i2c.c
index bd271fbe1ec1..3c930316d48b 100644
--- a/drivers/mfd/axp20x-i2c.c
+++ b/drivers/mfd/axp20x-i2c.c
@@ -79,7 +79,7 @@ static const struct i2c_device_id axp20x_i2c_id[] = {
 };
 MODULE_DEVICE_TABLE(i2c, axp20x_i2c_id);
 
-#if CONFIG_ACPI
+#ifdef CONFIG_ACPI
 static const struct acpi_device_id axp20x_i2c_acpi_match[] = {
        {
                .id = "INT33F4",
-- 
2.25.1