remove Emacs-tag form .cpp files in Mips Backend, and fix some typo.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@150805 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/Mips/MipsFrameLowering.cpp b/lib/Target/Mips/MipsFrameLowering.cpp
index 9ca69de..fd12b9c 100644
--- a/lib/Target/Mips/MipsFrameLowering.cpp
+++ b/lib/Target/Mips/MipsFrameLowering.cpp
@@ -1,4 +1,4 @@
-//=======- MipsFrameLowering.cpp - Mips Frame Information ------*- C++ -*-====//
+//===-- MipsFrameLowering.cpp - Mips Frame Information --------------------===//
 //
 //                     The LLVM Compiler Infrastructure
 //