usb: gadget: fix various indentation issues

There are a bunch of various indentation issues, clean these up.
Signed-off-by: NColin Ian King <colin.king@canonical.com>
Signed-off-by: NFelipe Balbi <felipe.balbi@linux.intel.com>

drivers/usb/gadget/legacy/inode.c

@@ -1220,7 +1220,7 @@ ep0_poll (struct file *fd, poll_table *wait)
 
 	poll_wait(fd, &dev->wait, wait);
 
-       spin_lock_irq (&dev->lock);
+	spin_lock_irq(&dev->lock);
 
 	/* report fd mode change before acting on it */
 	if (dev->setup_abort) {