Updating the libc-headers to use the 4.8 kernel as the default.
(From OE-Core rev: 253bf0332bd979b9fd9cf6fdc44682892f0bacf7)
Signed-off-by: Bruce Ashfield <bruce.ashfield@windriver.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>