Fix typos found by http://github.com/lyda/misspell-check

llvm-svn: 157885
diff --git a/llvm/lib/Target/Mips/MipsISelDAGToDAG.cpp b/llvm/lib/Target/Mips/MipsISelDAGToDAG.cpp
index 8784737..62f7cde 100644
--- a/llvm/lib/Target/Mips/MipsISelDAGToDAG.cpp
+++ b/llvm/lib/Target/Mips/MipsISelDAGToDAG.cpp
@@ -190,7 +190,7 @@
   // We emit only the last instruction here.
   //
   // GNU linker requires that the first two instructions appear at the beginning
-  // of a funtion and no instructions be inserted before or between them.
+  // of a function and no instructions be inserted before or between them.
   // The two instructions are emitted during lowering to MC layer in order to
   // avoid any reordering.
   //