Add normalize_path.py to prerequisites

Bug: 27954979
Change-Id: I1e22eb4f42a8cb348ce1101e207e239bc5aa7976
diff --git a/core/host_java_library.mk b/core/host_java_library.mk
index 0d71c01..9aa2a7c 100644
--- a/core/host_java_library.mk
+++ b/core/host_java_library.mk
@@ -66,6 +66,7 @@
         $(full_java_lib_deps) \
         $(jar_manifest_file) \
         $(proto_java_sources_file_stamp) \
+        $(NORMALIZE_PATH) \
         $(LOCAL_ADDITIONAL_DEPENDENCIES)
 	$(transform-host-java-to-package)