Add "include $(CLEAR_VARS)" for 4.4 ROMS (clears LOCAL_BUILT/LOCAL_INSTALLED error)

Change-Id: Ibbba0ce9c7ebadee40e42b740c83214fd1cd56ac
diff --git a/Android.mk b/Android.mk
index d8c880e..1b4cb07 100644
--- a/Android.mk
+++ b/Android.mk
@@ -14,6 +14,8 @@
 
 LOCAL_PATH := $(call my-dir)
 
+include $(CLEAR_VARS)
+
 TARGET_RECOVERY_GUI := true
 
 LOCAL_SRC_FILES := \