[PowerPC] fix register alignment for long double type

This patch fixes register alignment for long double type in
soft float mode. Before this patch alignment was 8 and this
patch changes it to 4.
Differential Revision: http://reviews.llvm.org/D18034

llvm-svn: 268909
diff --git a/llvm/lib/Target/PowerPC/PPCFastISel.cpp b/llvm/lib/Target/PowerPC/PPCFastISel.cpp
index 7ff7e48..cccc75f 100644
--- a/llvm/lib/Target/PowerPC/PPCFastISel.cpp
+++ b/llvm/lib/Target/PowerPC/PPCFastISel.cpp
@@ -16,6 +16,7 @@
 #include "PPC.h"
 #include "MCTargetDesc/PPCPredicates.h"
 #include "PPCCallingConv.h"
+#include "PPCCCState.h"
 #include "PPCISelLowering.h"
 #include "PPCMachineFunctionInfo.h"
 #include "PPCSubtarget.h"