[gn build] Port 79e859e

Author: llvmgnsyncbot

llvm/utils/gn/secondary/lld/Common/BUILD.gn

@@ -33,6 +33,7 @@ static_library("Common") {
   ]
   sources = [
     "Args.cpp",
+    "BPSectionOrdererBase.cpp",
     "CommonLinkerContext.cpp",
     "DWARF.cpp",
     "DriverDispatcher.cpp",