Switch MIPS to new ELFTargetAsmInfo. Add few FIXMEs.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@53790 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/Mips/MipsTargetAsmInfo.h b/lib/Target/Mips/MipsTargetAsmInfo.h
index bb94026..994da83 100644
--- a/lib/Target/Mips/MipsTargetAsmInfo.h
+++ b/lib/Target/Mips/MipsTargetAsmInfo.h
@@ -15,13 +15,14 @@
 #define MIPSTARGETASMINFO_H
 
 #include "llvm/Target/TargetAsmInfo.h"
+#include "llvm/Target/ELFTargetAsmInfo.h"
 
 namespace llvm {
 
   // Forward declaration.
   class MipsTargetMachine;
 
-  struct MipsTargetAsmInfo : public TargetAsmInfo {
+  struct MipsTargetAsmInfo : public ELFTargetAsmInfo {
     explicit MipsTargetAsmInfo(const MipsTargetMachine &TM);
   };