mfd: axp20x: Constify axp20x_acpi_match and rid unused warning

axp20x.c:239:30:
  warning: ‘axp20x_acpi_match’ defined but not used [-Wunused-variable]

Signed-off-by: Lee Jones <lee.jones@linaro.org>

1 files changed, 1 insertions, 1 deletions

diff --git a/drivers/mfd/axp20x.c b/drivers/mfd/axp20x.c
index 971b0eb8d821..c522ee22b1c0 100644
--- a/drivers/mfd/axp20x.c
+++ b/drivers/mfd/axp20x.c
@@ -236,7 +236,7 @@ static const struct i2c_device_id axp20x_i2c_id[] = {
 };
 MODULE_DEVICE_TABLE(i2c, axp20x_i2c_id);
 
-static struct acpi_device_id axp20x_acpi_match[] = {
+static const struct acpi_device_id axp20x_acpi_match[] = {
         {
                 .id = "INT33F4",
                 .driver_data = AXP288_ID,