[fidl][sysmem] Remove unions from sysmem

As part of the coming wire format migration unions won't be supported in
the C FIDL bindings. There are two unions in formats_deprecated.fidl:
BufferFormat & BufferSpec. They both have a single member, kind of
defeating the point of a union. BufferSpec isn't used so I've simply deleted
it. BufferFormat is still used a little (I think only in fuchsia.git) so
I turned it into a wire-format equivalent struct, adding an unused
uint32 tag field. The generated binding API changed a little so updated
all the call sites.

Bug: 38504
Change-Id: If3107d61df327f0a3ebdd2a6d7c96a57ff1bb228
10 files changed
tree: 88b5533275a66ab5d8808bc01fe3e63cf818305c
  1. boards/
  2. build/
  3. bundles/
  4. docs/
  5. examples/
  6. garnet/
  7. peridot/
  8. products/
  9. scripts/
  10. sdk/
  11. src/
  12. third_party/
  13. tools/
  14. zircon/
  15. .clang-format
  16. .clang-tidy
  17. .dir-locals.el
  18. .gitattributes
  19. .gitignore
  20. .gn
  21. .style.yapf
  22. AUTHORS
  23. BUILD.gn
  24. CODE_OF_CONDUCT.md
  25. CONTRIBUTING.md
  26. LICENSE
  27. OWNERS
  28. PATENTS
  29. README.md
  30. rustfmt.toml
README.md

Fuchsia

Pink + Purple == Fuchsia (a new operating system)

What is Fuchsia?

Fuchsia is a modular, capability-based operating system. Fuchsia runs on modern 64-bit Intel and ARM processors.

Fuchsia is an open source project with a code of conduct that we expect everyone who interacts with the project to respect.

How can I build and run Fuchsia?

See Getting Started.

Where can I learn more about Fuchsia?

See fuchsia.dev.