The locked sigs class needs to be inherited after the hashequiv mixin so
that get_unihash can correctly wrap the underlying hashequiv function.
To do this turn the locked sigs class into a second mixin, then the order
can be correctly handled. Tweak the get/set_taskdata to match.
(From OE-Core rev: 73d3414ecf594e426e6024b71931038a201eca52)
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
d80dd1c3f9