default: clean up with repo manifest command
default: clean up with repo manifest command

Use repo manifest to cleanup/sort all entries in the manifest. That
makes it simpler to maintain and cherry-pick patches.

Signed-off-by: Nicolas Dechesne <05fca36dfcf68f7e1c9eaf62b074676ab50a133b@linaro.org>

96boards/oe-rpb-manifest