[gn build] Port e361f28b7589 (#197060)

llvm/utils/gn/secondary/llvm/lib/ObjectYAML/BUILD.gn

diff --git a/llvm/utils/gn/secondary/llvm/lib/ObjectYAML/BUILD.gn b/llvm/utils/gn/secondary/llvm/lib/ObjectYAML/BUILD.gn
index 0708f2a..e25050f 100644
--- a/llvm/utils/gn/secondary/llvm/lib/ObjectYAML/BUILD.gn
+++ b/llvm/utils/gn/secondary/llvm/lib/ObjectYAML/BUILD.gn
@@ -10,6 +10,7 @@
   sources = [
     "ArchiveEmitter.cpp",
     "ArchiveYAML.cpp",
+    "BBAddrMapYAML.cpp",
     "COFFEmitter.cpp",
     "COFFYAML.cpp",
     "CodeViewYAMLDebugSections.cpp",