Add a script to publish an extensible SDK that has previously been built
to a specified destination. This published SDK is intended to be
accessed by the devtool sdk-update command from an installed copy of the
extensible SDK.
e.g.
oe-publish-sdk <ext-sdk> <destination>
Signed-off-by: Chen Qi <Qi.Chen@windriver.com> Signed-off-by: Paul Eggleton <paul.eggleton@linux.intel.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
