In the runqueue cleanup/conversion, "dep" was mistakenly used where "tid" should
be leading to incorrect task-depends.dot files and causing general confusion.
Fix this, its clearly incorrect looking at the code.
(Bitbake rev: 689730dbb068c5ea3593e7b92fe5d5e5c0c3760a)
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>