Update ok335x setup_env.sh tool, add create folder /apps

Guo Wenxue

2019-07-29 953d3ca0072bf7beeb08baa9d6ce11824ea9045c

ok335xD/linux-bsp/tarballs/linux-3.2.0.tar.xz does not exist in tree c2d7d9486b49c56a00b55be8e78b06bb15c0a87b