Updating the lttng-modules 2.5 recipe with backports from the master branch to
enable builds on 3.17 based kernels.
(From OE-Core rev: cc2ef9b0f6371837faa5e430c0b6c48bf24a8c4c)
Signed-off-by: Bruce Ashfield <bruce.ashfield@windriver.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>