[llvm-branch-commits] [NFC][ELF][AArch64] Use existing addSymbolReloc for R_AARCH64_AUTH_ABS64 (PR #171179)

[Jessica Clarke via llvm-branch-commits]

https://github.com/jrtc27 created https://github.com/llvm/llvm-project/pull/171179

The only difference between these calls is whether rel or type is passed
as the first argument, but AArch64::getDynRel returns type unchanged for
R_AARCH64_AUTH_ABS64, so they are the same.