Add extra variables to _readonly_late_variables

These are modified by us at a later stage, so be sure
to allow it.

Change-Id: Ib26e83e10aeb6c107fd6e5757185c05cd6665760

core/product.mk

@@ -604,9 +604,11 @@ _readonly_late_variables := \
 
 # Modified internally in the build system
 _readonly_late_variables += \
+  PRODUCT_CFI_INCLUDE_PATHS \
   PRODUCT_COPY_FILES \
   PRODUCT_DEX_PREOPT_NEVER_ALLOW_STRIPPING \
   PRODUCT_DEX_PREOPT_BOOT_FLAGS \
+  PRODUCT_SOONG_NAMESPACES
 
 _readonly_early_variables := $(filter-out $(_readonly_late_variables),$(_product_var_list))