Fix package_qa_handle_error so that it returns the correct values in order
to determine error/warning status.
(From OE-Core rev: a66ed717f5f5991ee4072df67428564677e7d220)
Signed-off-by: Paul Eggleton <paul.eggleton@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>