USB: fix leftover references to udev->autosuspend_delay

This patch (as1436) takes care of leftover references to
udev->autosuspend_delay that didn't get removed during the earlier
conversion to the runtime-PM autosuspend API.

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

drivers/net/wimax/i2400m/usb.c

@@ -514,7 +514,7 @@ int i2400mu_probe(struct usb_interface *iface,
 #ifdef CONFIG_PM
 	iface->needs_remote_wakeup = 1;		/* autosuspend (15s delay) */
 	device_init_wakeup(dev, 1);
-	usb_dev->autosuspend_delay = 15 * HZ;
+	pm_runtime_set_autosuspend_delay(&usb_dev->dev, 15000);
 	usb_enable_autosuspend(usb_dev);
 #endif