mfd: max77686: Make platform data over-rule DT

The function max77802_i2c_parse_dt_pdata() should only be called
if there isn't already platform data for the device.

Signed-off-by: Javier Martinez Canillas <javier.martinez@collabora.co.uk>
Signed-off-by: Lee Jones <lee.jones@linaro.org>

drivers/mfd/max77686.c

@@ -124,7 +124,7 @@ static int max77686_i2c_probe(struct i2c_client *i2c,
 	unsigned int data;
 	int ret = 0;
 
-	if (IS_ENABLED(CONFIG_OF) && i2c->dev.of_node)
+	if (IS_ENABLED(CONFIG_OF) && i2c->dev.of_node && !pdata)
 		pdata = max77686_i2c_parse_dt_pdata(&i2c->dev);
 
 	if (!pdata) {