Commit
3ebc0972e6a613dc78e72fdd95591d9b20cd8f6a
by Oliver Smithdeps/update: skip checkout if nothing to do
Let the user see what changes when running "make deps" instead of
having unrelated lines for checking out the commits that are already
checked out.
Change-Id: I572ab11afd56e34d9d0d04cd1372af749caa7d48