[yocto] minimize size of SW update bundle

[Robert Berger]

Hi,

Imagine you have only a limited bandwidth to your devices available for 
SW update. So you would like to minimize what's uploaded (over the air) 
to your devices.

How would you do this with yocto?

[1] and [2] might be able to do incremental updates, but maybe there are 
more ideas out there.

Like how would you get a diff between two release builds...

[1] https://wiki.yoctoproject.org/wiki/Meta-swupd
[2] https://github.com/advancedtelematic/meta-updater

Regards,

Robert