Backport patches to fix CVE-2016-7423 and CVE-2016-7908 of qemu.
(From OE-Core rev: 1f4c303fd64a4bc05882de01676f241f0df6da78)
Signed-off-by: Kai Kang <kai.kang@windriver.com>
Signed-off-by: Ross Burton <ross.burton@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>