Integrate meta-seconorth-distro/new_seco-show-demo
Commit: seco-ne/yocto/layers/meta-seconorth-distro@615ac6f0
seco-show-demo: Port to the latest seco-show-demo
Use the latest seco-show-demo:
- Rename the guf-show-demo to seco-show-demo
- Pull from ew2022 branch
- Also some slides needed refinement.