[WebAssembly] Support EXPLICIT_NAME symbols in llvm-readobj

Teach llvm-readobj about WASM_SYMBOL_EXPLICIT_NAME.

Differential Revision: https://reviews.llvm.org/D61323

Reviewer: sbc100
llvm-svn: 359602
diff --git a/llvm/tools/llvm-readobj/WasmDumper.cpp b/llvm/tools/llvm-readobj/WasmDumper.cpp
index e232d112..041a9a1 100644
--- a/llvm/tools/llvm-readobj/WasmDumper.cpp
+++ b/llvm/tools/llvm-readobj/WasmDumper.cpp
@@ -50,6 +50,7 @@
   ENUM_ENTRY(VISIBILITY_HIDDEN),
   ENUM_ENTRY(UNDEFINED),
   ENUM_ENTRY(EXPORTED),
+  ENUM_ENTRY(EXPLICIT_NAME),
 #undef ENUM_ENTRY
 };