[bazel] Undo #114620 partially

Author: pranavk

utils/bazel/llvm-project-overlay/llvm/BUILD.bazel

@@ -23,6 +23,7 @@ licenses(["notice"])
 exports_files([
     "LICENSE.TXT",
     "cmake/modules/llvm-driver-template.cpp.in",
+    "include/llvm/BinaryFormat/Dwarf.def",
     "include/llvm/CodeGen/SDNodeProperties.td",
     "include/llvm/CodeGen/ValueTypes.td",
     "include/llvm/Frontend/Directive/DirectiveBase.td",