[usb][dwc3] Rip banjo out of dwc3

This entirely omits all banjo primitives from the dwc3 driver.
Additionally:
- All std::variants are flattened to the required FIDL idiom.
- The std::tuple is ommitted in favor of a RequestInfo struct.
- The VariantQueue is flattened to only supporting FidlRequests.

Bug: b/373404993
Change-Id: Ifca620bc152b61390a12edd92caf27be7c06ca9e
Reviewed-on: https://fuchsia-review.googlesource.com/c/fuchsia/+/1137674
Reviewed-by: Braden Kell <bradenkell@google.com>
Commit-Queue: Sam Hansen <hansens@google.com>
7 files changed
tree: 74f5a8f1e86c63bf6ba271bc0f44e8851c03d9dd
  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

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