gpio: adp5588 - add support for gpio names

which is already found in the common header for adp5588

Signed-off-by: Jean-Francois Dagenais <[e-mail]>
Acked-by: Michael Hennerich <[e-mail]>
Signed-off-by: Linus Walleij <[e-mail]>

drivers/gpio/gpio-adp5588.c

···
 	gc->ngpio = ADP5588_MAXGPIO;
 	gc->label = client->name;
 	gc->owner = THIS_MODULE;
+	gc->names = pdata->names;
 
 	mutex_init(&dev->lock);