Add missing object.h to runtime_support_llvm.h

Change-Id: I668cba1edab6d6cb3a39bfb81a87c203c4687bbe
diff --git a/src/compiler_llvm/runtime_support_llvm.h b/src/compiler_llvm/runtime_support_llvm.h
index 3e8d96d..8f73079 100644
--- a/src/compiler_llvm/runtime_support_llvm.h
+++ b/src/compiler_llvm/runtime_support_llvm.h
@@ -17,6 +17,8 @@
 #ifndef ART_SRC_COMPILER_LLVM_RUNTIME_SUPPORT_LLVM_H_
 #define ART_SRC_COMPILER_LLVM_RUNTIME_SUPPORT_LLVM_H_
 
+#include "object.h"
+
 namespace art {
 
 class Method;