recovery: minui: add adf backend

Change-Id: I1ad97b5b62bddbcb1104fa0b4e54415b793a4194
Signed-off-by: Greg Hackmann <ghackmann@google.com>
diff --git a/CleanSpec.mk b/CleanSpec.mk
index ecf89ae..e2d97d4 100644
--- a/CleanSpec.mk
+++ b/CleanSpec.mk
@@ -48,3 +48,4 @@
 # NEWER CLEAN STEPS MUST BE AT THE END OF THE LIST
 # ************************************************
 $(call add-clean-step, rm -rf $(PRODUCT_OUT)/obj/EXECUTABLES/recovery_intermediates)
+$(call add-clean-step, rm -rf $(PRODUCT_OUT)/obj/STATIC_LIBRARIES/libminui_intermediates/import_includes)