Fix divide by zero bug (CVE-2014-9756)
(From OE-Core rev: f47cf07ab9d00ed7eddc8e867138481f7bd2bb7d)
Signed-off-by: Maxin B. John <maxin.john@intel.com>
Signed-off-by: Ross Burton <ross.burton@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>