[power] Implement ElementInfoProvider for SAG

Implements fuchsia.power.broker.ElementInfoProvider to expose power
levels of power elements in SAG.

Bug: b/331651807
Test: fx test system-activity-governor-test
Change-Id: Iaae551072e107bb2f1f3c3c39d0a32ae7e7806bc
Reviewed-on: https://fuchsia-review.googlesource.com/c/fuchsia/+/1022952
Reviewed-by: Alex Wong <alexdwong@google.com>
Commit-Queue: Didi She <didis@google.com>
Reviewed-by: Kyle Gong <kgong@google.com>
API-Review: Michael Brunson <mbrunson@google.com>
Reviewed-by: Michael Brunson <mbrunson@google.com>
5 files changed
tree: 1e26558dda41e1cb20a035ef72d6ce87f1a24653
  1. boards/
  2. build/
  3. bundles/
  4. docs/
  5. examples/
  6. infra/
  7. products/
  8. scripts/
  9. sdk/
  10. src/
  11. third_party/
  12. tools/
  13. zircon/
  14. .clang-format
  15. .clang-tidy
  16. .editorconfig
  17. .git-blame-ignore-revs
  18. .gitattributes
  19. .gitignore
  20. .gitmodules
  21. .gn
  22. .ignore
  23. analysis_options.yaml
  24. AUTHORS
  25. BUILD.gn
  26. CODE_OF_CONDUCT.md
  27. CONTRIBUTING.md
  28. fuchsia.code-workspace
  29. LICENSE
  30. OWNERS
  31. PATENTS
  32. pyproject.toml
  33. pyrightconfig.json
  34. README.md
  35. rustfmt.toml
  36. shac.star
  37. shac.textproto
README.md

Fuchsia

What is Fuchsia?

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Read more about Fuchsia's principles.

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