[llvm] [AMDGPU] Add AMDGPU support for llvm-objcopy (PR #92066)

[James Henderson via llvm-commits]

================
@@ -129,6 +134,7 @@ FileHeader:
   # Arbitrary values that do not match any value we convert to via --output-format.
   Machine:         EM_NONE
   OSABI:           ELFOSABI_STANDALONE
+  Flags:           [[FLAGS=<none>]]
----------------
jh7370 wrote:

Flags is an array. It should be `[]` for the default value. It should also be fairly straightforward to implement `<none>` support for the Flags field in yaml2obj, if desired, but I don't think it's strictly needed.

https://github.com/llvm/llvm-project/pull/92066