libusbhost:  add usb_device_get_unique_id_from_name()

Change-Id: Idce54fc26d0432d4dc46f605623c4960c0e8690f
Signed-off-by: Mike Lockwood <lockwood@android.com>
diff --git a/include/usbhost/usbhost.h b/include/usbhost/usbhost.h
index 04c494d..f7cc52e 100644
--- a/include/usbhost/usbhost.h
+++ b/include/usbhost/usbhost.h
@@ -84,6 +84,8 @@
  */
 int usb_device_get_unique_id(struct usb_device *device);
 
+int usb_device_get_unique_id_from_name(const char* name);
+
 /* Returns the USB vendor ID from the device descriptor for the USB device */
 uint16_t usb_device_get_vendor_id(struct usb_device *device);