gpio: zynq: Setup bank_name to dev->name

There should be proper bank name setup to distinguish between different
gpio drivers. Use dev->name for it.

Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Reviewed-by: Simon Glass <sjg@chromium.org>

drivers/gpio/zynq_gpio.c

@@ -337,6 +337,8 @@ static int zynq_gpio_probe(struct udevice *dev)
 	struct zynq_gpio_privdata *priv = dev_get_priv(dev);
 	struct gpio_dev_priv *uc_priv = dev_get_uclass_priv(dev);
 
+	uc_priv->bank_name = dev->name;
+
 	if (priv->p_data)
 		uc_priv->gpio_count = priv->p_data->ngpio;