LICENSE clean up (#919)

- Clean up and standardization of MIT licenses after discussion with legal team.
- Update README.md with blurb for top-level files.
- MIT License explicitly mentioned for relevant projects.
- Removal of years.
- Copyright attribution should be to `Advanced Micro Devices, Inc.` and not `AMD ROCm(TM) Software`
- Removal of `All rights reserved.`
- Reduce line width of the text for readability.
- Add clear visual separators for additional licenses.
- Convert text files to markdown format for aforementioned separators.
- Update build scripts to point to renamed files.
- Fixed SMI doc references

Co-authored-by: Maisam Arif <Maisam.Arif@amd.com>

README.md

@@ -97,6 +97,7 @@ To begin contributing or building, see the [CONTRIBUTING.md](./CONTRIBUTING.md)
 This super-repo contains multiple subprojects, each of which retains the license under which it was originally published.
 
 📁 Refer to the `LICENSE`, `LICENSE.md`, or `LICENSE.txt` file within each `projects/` or `shared/` directory for specific license terms.
+📄 Refer to the header notice in individual files outside `projects/` or `shared/` folders for their specific license terms.
 
 > **Note**: The root of this repository does not define a unified license across all components.