Small number of bug fixes and x86 optimizations.
(From OE-Core rev: a8aff2a0e77c401fee5a94a906ab355814505157)
Signed-off-by: Jussi Kukkonen <jussi.kukkonen@intel.com>
Signed-off-by: Ross Burton <ross.burton@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>