gpio: Update for new sequence numbers

Use the dev_seq() sequence number in all cases.

Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/drivers/gpio/mvebu_gpio.c b/drivers/gpio/mvebu_gpio.c
index 166fc66..4c1c68e 100644
--- a/drivers/gpio/mvebu_gpio.c
+++ b/drivers/gpio/mvebu_gpio.c
@@ -92,7 +92,7 @@
 
 	priv->regs = dev_read_addr_ptr(dev);
 	uc_priv->gpio_count = MVEBU_GPIOS_PER_BANK;
-	priv->name[0] = 'A' + dev->req_seq;
+	priv->name[0] = 'A' + dev_seq(dev);
 	uc_priv->bank_name = priv->name;
 
 	return 0;