USB: do not print -ESHUTDOWN message if usb at otg device mode

At otg device mode, the otg host resume should do no-op during
system resume, otherwise, the otg device will be treated as a
host for enumeration.

So, the otg host driver returns -ESHUTDOWN if it detects the
current usb mode is device mode. The host driver has to return
-ESHUTDOWN, otherwise, the usb_hc_died will be called.

Signed-off-by: Peter Chen <peter.chen@freescale.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

drivers/usb/core/driver.c

@@ -1337,7 +1337,7 @@ int usb_resume(struct device *dev, pm_message_t msg)
 	/* Avoid PM error messages for devices disconnected while suspended
 	 * as we'll display regular disconnect messages just a bit later.
 	 */
-	if (status == -ENODEV)
+	if (status == -ENODEV || status == -ESHUTDOWN)
 		status = 0;
 	return status;
 }