uledd: fix license to correct LGPL-2.1-only

"This program is free software; you can redistribute it and/or modify
  it under the terms of the GNU Lesser General Public License version 2.1"

Signed-off-by: Petr Štetiar <ynezz@true.cz>

utils/uledd/Makefile

@@ -8,7 +8,7 @@ PKG_SOURCE_PROTO:=git
 PKG_SOURCE_VERSION:=bc94c7e52009f7ec33b23652502b4754351d8040
 PKG_MIRROR_HASH:=23a407197d6a423bb0b32f381e93ad3676e15f07465d7b53c843a2b510c7c284
 PKG_MAINTAINER:=John Crispin <john@phrozen.org>
-PKG_LICENSE:=GPL-2.0
+PKG_LICENSE:=LGPL-2.1-only
 
 CMAKE_INSTALL:=1