[llvm] [llvm-readobj][AArch64][ELF][PAC] Support ELF AUTH constants (PR #72713)

[Daniil Kovalev via llvm-commits]

================
@@ -1643,6 +1646,11 @@ enum {
   NT_ANDROID_TYPE_MEMTAG = 4,
 };
 
+// ARM note types
+enum {
+  NT_ARM_TYPE_PAUTH_ABI_TAG = 1,
----------------
kovdan01 wrote:

@smithp35 Could we provide this constant name `NT_ARM_TYPE_PAUTH_ABI_TAG` (or some other name) and its value `1` in the section 14.1 of the spec https://github.com/ARM-software/abi-aa/blob/main/pauthabielf64/pauthabielf64.rst#appendix-alternative-elf-marking-using-gnu-program-properties? I could submit a PR to https://github.com/ARM-software/abi-aa if you wish.


https://github.com/llvm/llvm-project/pull/72713