Updating the 3.17 recipe to -rc6. This is nearly the release kernel, and should
have very few changes aftert this point.
(From OE-Core rev: 845e01d906982c2147828b97129e95e8a79dce7c)
Signed-off-by: Bruce Ashfield <bruce.ashfield@windriver.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>