Add ARM relocations to ELFYAML

Tested with check-all with no regressions.

llvm-svn: 223112

llvm/lib/Object/ELFYAML.cpp

@@ -435,6 +435,9 @@ void ScalarEnumerationTraits<ELFYAML::ELF_REL>::enumeration(
   case ELF::EM_AARCH64:
 #include "llvm/Support/ELFRelocs/AArch64.def"
     break;
+  case ELF::EM_ARM:
+#include "llvm/Support/ELFRelocs/ARM.def"
+    break;
   default:
     llvm_unreachable("Unsupported architecture");
   }