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

llvm-svn: 152997
diff --git a/llvm/lib/Target/MSP430/MSP430Subtarget.h b/llvm/lib/Target/MSP430/MSP430Subtarget.h
index e7bebbd..4d8792e 100644
--- a/llvm/lib/Target/MSP430/MSP430Subtarget.h
+++ b/llvm/lib/Target/MSP430/MSP430Subtarget.h
@@ -15,12 +15,11 @@
 #define LLVM_TARGET_MSP430_SUBTARGET_H
 
 #include "llvm/Target/TargetSubtargetInfo.h"
+#include <string>
 
 #define GET_SUBTARGETINFO_HEADER
 #include "MSP430GenSubtargetInfo.inc"
 
-#include <string>
-
 namespace llvm {
 class StringRef;