some comment fix for X86 and ARM

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@150902 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/X86/X86COFFMachineModuleInfo.cpp b/lib/Target/X86/X86COFFMachineModuleInfo.cpp
index 411e4be..e01ff41 100644
--- a/lib/Target/X86/X86COFFMachineModuleInfo.cpp
+++ b/lib/Target/X86/X86COFFMachineModuleInfo.cpp
@@ -1,4 +1,4 @@
-//===-- X86COFFMachineModuleInfo.cpp --------------------------------------===//
+//===-- X86COFFMachineModuleInfo.cpp - X86 COFF MMI Impl ------------------===//
 //
 //                     The LLVM Compiler Infrastructure
 //