[CodeGen] Fix -DBUILD_SHARED_LIBS=on build after rC348907

llvm-svn: 348911
diff --git a/clang/lib/CodeGen/CMakeLists.txt b/clang/lib/CodeGen/CMakeLists.txt
index 2a0f4f0..29c6793 100644
--- a/clang/lib/CodeGen/CMakeLists.txt
+++ b/clang/lib/CodeGen/CMakeLists.txt
@@ -102,4 +102,5 @@
   clangBasic
   clangFrontend
   clangLex
+  clangSerialization
   )