Fix 'invalid-license' error
This fixes following build error message:
ui-gadget-1-devel.armv7l: E: invalid-license (Badness: 200) Apache License, Version 2.0
ui-gadget-1.armv7l: E: invalid-license (Badness: 200) Apache License, Version 2.0
ui-gadget-1.src: E: invalid-license (Badness: 200) Apache License, Version 2.0
The specified license string is not recognized. Please refer to
http://spdx.org/licenses/ for the list of known licences and their exact
spelling.
Change-Id: I077cdc6c62a30a97fbf9125848ef804400946192
Signed-off-by: Shuhrat Dehkanov <sh.dehkanov@samsung.com>