This treeview code was obviously copy-pasted from one of the config
dialogs and the variables were never renamed. Rename them now to improve
readability.
(Bitbake rev: 93b3ddad4396d757d1d0c199ac168f8b1a205fe3)
Signed-off-by: Paul Eggleton <paul.eggleton@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>