gpio: adp5588 - add support for gpio names

which is already found in the common header for adp5588

Signed-off-by: Jean-Francois Dagenais <jeff.dagenais@gmail.com>
Acked-by: Michael Hennerich <michael.hennerich@analog.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

drivers/gpio/gpio-adp5588.c

@@ -397,6 +397,7 @@ static int adp5588_gpio_probe(struct i2c_client *client,
 	gc->ngpio = ADP5588_MAXGPIO;
 	gc->label = client->name;
 	gc->owner = THIS_MODULE;
+	gc->names = pdata->names;
 
 	mutex_init(&dev->lock);