relink: make dependent on libtar compilation

Change-Id: I51ef2918e6aacb3078a38cc9ec7fae2dfb9e73ee
diff --git a/prebuilt/Android.mk b/prebuilt/Android.mk
index f5785ff..90cbea3 100755
--- a/prebuilt/Android.mk
+++ b/prebuilt/Android.mk
@@ -493,7 +493,7 @@
 LOCAL_MODULE_PATH := $(TARGET_RECOVERY_ROOT_OUT)/sbin
 LOCAL_POST_INSTALL_CMD += $(RELINK) $(TARGET_RECOVERY_ROOT_OUT)/sbin $(RELINK_SOURCE_FILES) && \
     mv $(TOYBOX_LINKS) $(TARGET_RECOVERY_ROOT_OUT)/sbin/
-LOCAL_REQUIRED_MODULES := linker adbd libdl_android toybox
+LOCAL_REQUIRED_MODULES := linker adbd libdl_android toybox libtar
 include $(BUILD_PHONY_PACKAGE)
 
 #relink init