mfd: max77686: Don't define dummy function if OF isn't enabled

When the CONFIG_OF option was not enabled, a dummy function
max77686_i2c_parse_dt_pdata() was defined since this is called
unconditionally on probe(). Just always define the real function
and conditionally call it if CONFIG_OF is enabled instead.

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

drivers/mfd/max77686.c

@@ -96,7 +96,6 @@ static const struct regmap_irq_chip max77686_rtc_irq_chip = {
 	.num_irqs		= ARRAY_SIZE(max77686_rtc_irqs),
 };
 
-#ifdef CONFIG_OF
 static const struct of_device_id max77686_pmic_dt_match[] = {
 	{.compatible = "maxim,max77686", .data = NULL},
 	{},
@@ -116,13 +115,6 @@ static struct max77686_platform_data *max77686_i2c_parse_dt_pdata(struct device
 	dev->platform_data = pd;
 	return pd;
 }
-#else
-static struct max77686_platform_data *max77686_i2c_parse_dt_pdata(struct device
-								  *dev)
-{
-	return 0;
-}
-#endif
 
 static int max77686_i2c_probe(struct i2c_client *i2c,
 			      const struct i2c_device_id *id)
@@ -132,7 +124,7 @@ static int max77686_i2c_probe(struct i2c_client *i2c,
 	unsigned int data;
 	int ret = 0;
 
-	if (i2c->dev.of_node)
+	if (IS_ENABLED(CONFIG_OF) && i2c->dev.of_node)
 		pdata = max77686_i2c_parse_dt_pdata(&i2c->dev);
 
 	if (!pdata) {