mtd: struct device - replace bus_id with dev_name(), dev_set_name()

CC: David Woodhouse <dwmw2@infradead.org>
Signed-off-by: Kay Sievers <kay.sievers@vrfy.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
diff --git a/drivers/mtd/nand/fsl_upm.c b/drivers/mtd/nand/fsl_upm.c
index a83192f..7815a40 100644
--- a/drivers/mtd/nand/fsl_upm.c
+++ b/drivers/mtd/nand/fsl_upm.c
@@ -222,7 +222,7 @@
 
 	fun->rnb_gpio = of_get_gpio(ofdev->node, 0);
 	if (fun->rnb_gpio >= 0) {
-		ret = gpio_request(fun->rnb_gpio, ofdev->dev.bus_id);
+		ret = gpio_request(fun->rnb_gpio, dev_name(&ofdev->dev));
 		if (ret) {
 			dev_err(&ofdev->dev, "can't request RNB gpio\n");
 			goto err2;