Add inferred register category map to Method object.

Change-Id: I69456c79eb3ce3df1924bffe4db5314b0552f1de
diff --git a/src/compiler_llvm/method_compiler.h b/src/compiler_llvm/method_compiler.h
index 8d9820a..7b1154d 100644
--- a/src/compiler_llvm/method_compiler.h
+++ b/src/compiler_llvm/method_compiler.h
@@ -17,6 +17,7 @@
 #ifndef ART_SRC_COMPILER_LLVM_METHOD_COMPILER_H_
 #define ART_SRC_COMPILER_LLVM_METHOD_COMPILER_H_
 
+#include "backend_types.h"
 #include "constants.h"
 #include "dex_file.h"
 #include "dex_instruction.h"