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/iproc_gpio.c b/drivers/gpio/iproc_gpio.c
index 0561b36..8c143e9 100644
--- a/drivers/gpio/iproc_gpio.c
+++ b/drivers/gpio/iproc_gpio.c
@@ -252,7 +252,7 @@
 		return ret;
 	}
 
-	snprintf(name, sizeof(name), "GPIO%d", dev->req_seq);
+	snprintf(name, sizeof(name), "GPIO%d", dev_seq(dev));
 	plat->name = strdup(name);
 	if (!plat->name)
 		return -ENOMEM;