gn build: Merge r350819

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@350829 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/utils/gn/secondary/lld/ELF/BUILD.gn b/utils/gn/secondary/lld/ELF/BUILD.gn
index d5f8a89..8006ef1 100644
--- a/utils/gn/secondary/lld/ELF/BUILD.gn
+++ b/utils/gn/secondary/lld/ELF/BUILD.gn
@@ -29,6 +29,7 @@
     "Arch/ARM.cpp",
     "Arch/AVR.cpp",
     "Arch/Hexagon.cpp",
+    "Arch/MSP430.cpp",
     "Arch/Mips.cpp",
     "Arch/MipsArchTree.cpp",
     "Arch/PPC.cpp",