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

[James Henderson via llvm-commits]

================
@@ -1643,6 +1646,11 @@ enum {
   NT_ANDROID_TYPE_MEMTAG = 4,
 };
 
+// ARM note types
+enum {
+  NT_ARM_TYPE_PAUTH_ABI_TAG = 1,
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jh7370 wrote:

I couldn't see this value defined in the linked spec?

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