Some Mips minor fixes

Added support for mips little endian arch => mipsel



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51923 91177308-0d34-0410-b5e6-96231b3b80d8

lib/Target/Mips/MipsSubtarget.cpp

@@ -17,8 +17,9 @@
 using namespace llvm;
 
 MipsSubtarget::MipsSubtarget(const TargetMachine &TM, const Module &M, 
-                             const std::string &FS) : 
-  IsMipsIII(false)
+                             const std::string &FS, bool little) : 
+  IsMipsIII(false),
+  IsLittle(little)
 {
   std::string CPU = "mips1";