No real functional changes, just cleaning up shellcheck issues, putting
braces around variables, add comments and the like.
Signed-off-by: Martin Roth <gaumless@gmail.com>
Change-Id: I6e79afc8d725e86ddbf7f4eb4685bed190c20738
Reviewed-on: https://review.coreboot.org/c/coreboot/+/67319
Reviewed-by: Raul Rangel <rrangel@chromium.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
d05ea79e40