The LIC_FILES_CHKSUM was changed because the year changed: 2013 -> 2015,
the license are the same.
(From OE-Core rev: 72e37ddcaac4c7fdc4aec292defd528dd86014ac)
Signed-off-by: Robert Yang <liezhi.yang@windriver.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>