Adding two new configuration blocks/features to the 4.14+ kernel
variants.
One is for enabling selftest options, and the other is a collection
of kernel security/hardening configs.
(From OE-Core rev: 8a0c315d21bb6783b55ecc73ec48274da0ceff43)
Signed-off-by: Bruce Ashfield <bruce.ashfield@windriver.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>