Fix Triple to recognize the 'bfin' arch.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@79325 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Support/Triple.cpp b/lib/Support/Triple.cpp
index e5ee6d5..c2982ce 100644
--- a/lib/Support/Triple.cpp
+++ b/lib/Support/Triple.cpp
@@ -123,6 +123,8 @@
     Arch = x86;
   else if (ArchName == "amd64" || ArchName == "x86_64")
     Arch = x86_64;
+  else if (ArchName == "bfin")
+    Arch = bfin;
   else if (ArchName == "pic16")
     Arch = pic16;
   else if (ArchName == "powerpc")