mod_devicetable.h: grammar fix in comment

Signed-off-by: Michael Opdenacker <michael.opdenacker@free-electrons.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
diff --git a/include/linux/mod_devicetable.h b/include/linux/mod_devicetable.h
index 44eeef0..745def8 100644
--- a/include/linux/mod_devicetable.h
+++ b/include/linux/mod_devicetable.h
@@ -69,7 +69,7 @@
  * @bDeviceClass: Class of device; numbers are assigned
  *	by the USB forum.  Products may choose to implement classes,
  *	or be vendor-specific.  Device classes specify behavior of all
- *	the interfaces on a devices.
+ *	the interfaces on a device.
  * @bDeviceSubClass: Subclass of device; associated with bDeviceClass.
  * @bDeviceProtocol: Protocol of device; associated with bDeviceClass.
  * @bInterfaceClass: Class of interface; numbers are assigned