Partial fix for [YOCTO #5368]
Updated the figure to not have the tarball method in there
for setting up poky repo locally. Also, added specific references
to the environment setup scripts.
(From yocto-docs rev: 7c6ececaf8eb987206567077f42213dbe4cdc4f2)
Signed-off-by: Scott Rifenbark <scott.m.rifenbark@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>