iio: light: apds9960: Add OF device ID table

The driver doesn't have a struct of_device_id table but supported devices
are registered via Device Trees. This is working on the assumption that a
I2C device registered via OF will always match a legacy I2C device ID and
that the MODALIAS reported will always be of the form i2c:<device>.

But this could change in the future so the correct approach is to have an
OF device ID table if the devices are registered via OF.
Signed-off-by: NJavier Martinez Canillas <javier@osg.samsung.com>
Signed-off-by: NJonathan Cameron <jic23@kernel.org>

drivers/iio/light/apds9960.c

@@ -1122,9 +1122,16 @@ static const struct i2c_device_id apds9960_id[] = {
 };
 MODULE_DEVICE_TABLE(i2c, apds9960_id);
 
+static const struct of_device_id apds9960_of_match[] = {
+	{ .compatible = "avago,apds9960" },
+	{ }
+};
+MODULE_DEVICE_TABLE(of, apds9960_of_match);
+
 static struct i2c_driver apds9960_driver = {
 	.driver = {
 		.name	= APDS9960_DRV_NAME,
+		.of_match_table = apds9960_of_match,
 		.pm	= &apds9960_pm_ops,
 	},
 	.probe		= apds9960_probe,