sim: Use logging to control output

Use the Rust logging so that normal messaging isn't overwhelmed by
messages printed.  The default level is 'error' which will only print
full errors (including the failures at the end).

To run with warnings:

   RUST_LOG=warn ./target/release/bootsim ...

This will print warnings, showing the particular failures in mind.
Using 'info' instead of 'warn' will print lots of progress as it runs.
4 files changed
tree: 5d0aa36ff66619e5996c7c7d0e39d5b11a712a96
  1. boot/
  2. sim/
  3. zephyr/
  4. project.yml
  5. README.md
  6. repository.yml
README.md

mcuboot

MCU boot loader