[PATCH v3 2/2] hwmon: (max6639) Add compatible string

[Naresh Solanki <naresh.solanki@9elements.com>]

Use maxim,max6639 as compatible string for the driver.

Signed-off-by: Naresh Solanki <Naresh.Solanki@9elements.com>
---
Changes in V3:
- None
Changes in V2:
- None, Updated DT patch
---
 drivers/hwmon/max6639.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/drivers/hwmon/max6639.c b/drivers/hwmon/max6639.c
index caf527154fca..aa7f21ab2395 100644
--- a/drivers/hwmon/max6639.c
+++ b/drivers/hwmon/max6639.c
@@ -618,11 +618,17 @@ MODULE_DEVICE_TABLE(i2c, max6639_id);
 
 static DEFINE_SIMPLE_DEV_PM_OPS(max6639_pm_ops, max6639_suspend, max6639_resume);
 
+static const struct of_device_id max6639_of_match[] = {
+	{ .compatible = "maxim,max6639", },
+	{ },
+};
+
 static struct i2c_driver max6639_driver = {
 	.class = I2C_CLASS_HWMON,
 	.driver = {
 		   .name = "max6639",
 		   .pm = pm_sleep_ptr(&max6639_pm_ops),
+		   .of_match_table = max6639_of_match,
 		   },
 	.probe = max6639_probe,
 	.id_table = max6639_id,
-- 
2.41.0