[gn build] Port 224290d

Author: llvmgnsyncbot

llvm/utils/gn/secondary/llvm/lib/ExecutionEngine/Orc/BUILD.gn

@@ -41,6 +41,7 @@ static_library("Orc") {
     "JITTargetMachineBuilder.cpp",
     "LLJIT.cpp",
     "Layer.cpp",
+    "LazyObjectLinkingLayer.cpp",
     "LazyReexports.cpp",
     "LoadLinkableFile.cpp",
     "LookupAndRecordAddrs.cpp",