Clean up RsFountainFbo_intermediates.

Change-Id: I5c041bac357466d918d3dd209f36b505fd000852
diff --git a/CleanSpec.mk b/CleanSpec.mk
index 7bc30fd..547ec6c 100644
--- a/CleanSpec.mk
+++ b/CleanSpec.mk
@@ -222,6 +222,7 @@
 $(call add-clean-step, rm -rf $(OUT_DIR)/target/common/obj/JAVA_LIBRARIES/services.core_intermediates)
 $(call add-clean-step, rm -rf $(OUT_DIR)/target/common/obj/JAVA_LIBRARIES/services_intermediates)
 $(call add-clean-step, rm -rf $(PRODUCT_OUT)/system/bin/inputflinger $(PRODUCT_OUT)/symbols/system/bin/inputflinger)
+$(call add-clean-step, rm -rf $(OUT_DIR)/target/common/obj/APPS/RsFountainFbo_intermediates)
 
 # ******************************************************************
 # NEWER CLEAN STEPS MUST BE AT THE END OF THE LIST ABOVE THIS BANNER