Adding header for FunctionCallee type

hpvm/include/GenVISC/GenVISC.h

@@ -13,6 +13,7 @@
 #include "llvm/IR/IntrinsicInst.h"
 #include "llvm/IR/Value.h"
 #include "llvm/Pass.h"
+#include "llvm/IR/DerivedTypes.h"
 #include "SupportVISC/VISCTimer.h"
 
 using namespace llvm;