[objdump][macho] Check arch before formating reloc name as arm64 addend

Before formating ARM64_RELOC_ADDEND relocation target name as a hex
number, the architecture need to be checked since other architectures
can define a different relocation type with the same integer as
ARM64_RELOC_ADDEND.

Reviewed By: MaskRay

Differential Revision: https://reviews.llvm.org/D89094

Author: pguo-cn

llvm/tools/llvm-objdump/MachODump.cpp

@@ -453,7 +453,8 @@ static void printRelocationTargetName(const MachOObjectFile *O,
   bool isExtern = O->getPlainRelocationExternal(RE);
   uint64_t Val = O->getPlainRelocationSymbolNum(RE);
 
-  if (O->getAnyRelocationType(RE) == MachO::ARM64_RELOC_ADDEND) {
+  if (O->getAnyRelocationType(RE) == MachO::ARM64_RELOC_ADDEND &&
+      (O->getArch() == Triple::aarch64 || O->getArch() == Triple::aarch64_be)) {
     Fmt << format("0x%0" PRIx64, Val);
     return;
   }