Add a function that allows executing a flat python function (defined
with def funcname(args): ...).
(Bitbake rev: 20e6939ebcb62e08a9a7ad586a915dfe368136a0)
Signed-off-by: Paul Eggleton <paul.eggleton@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>