tree 8d88f3324b12a243862b708004dd678770fcb91f
parent 7dc6d5411d05b355a962354b067472d3676f2632
author David Brown <david.brown@linaro.org> 1551376490 -0700
committer David Brown <david.brown@linaro.org> 1551379318 -0700

sim: Move `Images` to before code

Rust convention is to have types before implementation.  Move `Images`
up to the top to make it more prominent.  This is also a good
opportunity to add a bit of a comment to this struct.

Signed-off-by: David Brown <david.brown@linaro.org>