usb: gadget: legacy: inode: remove useless cast for driver.name

device_driver name is const char pointer, so it not useful to cast
shortname (which is already const char).

Signed-off-by: Corentin Labbe <clabbe@baylibre.com>
Link: https://lore.kernel.org/r/1582054383-35760-3-git-send-email-clabbe@baylibre.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/usb/gadget/legacy/inode.c

@@ -1736,7 +1736,7 @@ static struct usb_gadget_driver gadgetfs_driver = {
 	.suspend	= gadgetfs_suspend,
 
 	.driver	= {
-		.name		= (char *) shortname,
+		.name		= shortname,
 	},
 };