Upstream UEFI SMBIOS constants to r-efi

[kat-perez]

Description

Several UEFI specification-defined constants are currently defined locally in the patina_smbios crate rather than being sourced from r-efi. These should be upstreamed to r-efi so they are available to the broader UEFI Rust ecosystem.

From PR #1447 review:

"for these various UEFI spec defined things, we should be taking them to r-efi as well. Hosting them here until they are merged there is fine."

Already upstreamed

• EFI_GLOBAL_VARIABLE GUID — r-efi #93
• LOAD_OPTION_* attribute constants — r-efi #93
• EFI_DEBUG_IMAGE_INFO_TABLE constants — r-efi 1c6682e

To upstream

SMBIOS constants currently defined locally in patina_smbios that need to land in r-efi:

• SmbiosProtocol::PROTOCOL_GUID (manager/protocol.rs:51) — EDK2 SMBIOS protocol GUID
• SMBIOS_HANDLE_PI_RESERVED = 0xFFFE (service.rs:30) — reserved handle for auto-assignment
• SMBIOS_STRING_MAX_LENGTH = 64 (service.rs:33) — max string length

Switch to r-efi

Already in r-efi; patina should drop the local definition and use the upstream one:

• SMBIOS_3_X_TABLE_GUID (manager/core.rs:38) → use r_efi::system::SMBIOS3_TABLE_GUID

References

• r-efi repository
• UEFI Specification 2.11
• PR [feature/patina-boot] patina_boot: Add discover_boot_options helper #1447 review comment from @os-d

[kat-perez]

@makubacki Updated the title and body to reflect the current status of what's already upstreamed and what's left for patina_smbios constants