Changelogs:

* https://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.18.15
* https://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.18.16Signed-off-by: Jonas Gorski <jogo@openwrt.org>

Backport of r46011.

git-svn-id: svn://svn.openwrt.org/openwrt/branches/chaos_calmer@46015 3c298f89-4303-0410-b956-a3cf2f4a3e73