Make default 64-bit primary, 32-bit secondary

Change-Id: I2613a5072e2778307eebdc95d81f184f748ce9f5
diff --git a/CleanSpec.mk b/CleanSpec.mk
index c764204..dae2b35 100644
--- a/CleanSpec.mk
+++ b/CleanSpec.mk
@@ -236,6 +236,9 @@
 # Switching to 32-bit-by-default host multilib build
 $(call add-clean-step, rm -rf $(HOST_OUT_INTERMEDIATES))
 
+# Change ro.zygote for core_64_bit.mk from zygote32_64 to zygote64_32
+$(call add-clean-step, rm -rf $(PRODUCT_OUT)/root/default.prop)
+$(call add-clean-step, rm -rf $(PRODUCT_OUT)/recovery/root/default.prop)
 # ************************************************
 # NEWER CLEAN STEPS MUST BE AT THE END OF THE LIST
 # ************************************************