Reorder includes in Target backends to following coding standards. Remove some superfluous forward declarations.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@152997 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/Mips/MipsMCInstLower.cpp b/lib/Target/Mips/MipsMCInstLower.cpp
index be65298..0d51298 100644
--- a/lib/Target/Mips/MipsMCInstLower.cpp
+++ b/lib/Target/Mips/MipsMCInstLower.cpp
@@ -12,9 +12,9 @@
 //
 //===----------------------------------------------------------------------===//
 
+#include "MipsMCInstLower.h"
 #include "MipsAsmPrinter.h"
 #include "MipsInstrInfo.h"
-#include "MipsMCInstLower.h"
 #include "MCTargetDesc/MipsBaseInfo.h"
 #include "llvm/CodeGen/MachineFunction.h"
 #include "llvm/CodeGen/MachineInstr.h"