Some bootmeths can provide information about what is available to boot.
For example, VBE simple provides access to the firmware state.
Add a new method for this, along with a sandbox test.
Signed-off-by: Simon Glass <sjg@chromium.org>
Add a set of combined tests for the bootdev, bootflow and bootmeth
commands, along with associated functionality.
Expand the sandbox console-recording limit so that these can work.
These tests rely on a filesystem script which is not yet added to the
Python tests. It is included here as a shell script.
Signed-off-by: Simon Glass <sjg@chromium.org>
