Update all copyright notices in shell scripts from 2025 to 2026.
## Changes
- **Igor Pecovnik**: 2013-2025 → 2013-2026 (129 files)
- **Ricardo Pardini**: 2023-2025 → 2023-2026, 2020-2025 → 2020-2026 (5 files)
## Additional Improvements
Also updated the backtitle in `lib/functions/configuration/interactive.sh`:
- Changed title from "Armbian building script" to "Armbian Linux build framework"
- Removed docs link for cleaner display
- Uses dynamic year calculation with separate declaration (fixes shellcheck SC2155)
Validates the dts/dtb file for the selected board and outputs the validation logs to the user.
This can be used when adding a new board, developing or improving a dts file. Should lead to higher quality device trees and patches overall, if used.
Will show warnings/errors if patches patch in some functionalities to a devicetree file without patching in the dt-bindings .yaml at the same time.
Validates the dts/dtb file for the selected board and outputs the validation logs to the user.
This can be used when adding a new board, developing or improving a dts file. Should lead to higher quality device trees and patches overall, if used.
