Move default setting of a product variable

Should be in product_config.mk, before the variables are readonly'd, or
the default will fail to work.

(cherry picked from commit 269dd013a5bd626a697798279ff650dc2337474b)

Bug: 131576555
Test: set PRODUCT_SHIPPING_API_LEVEL := 29 in mainline_arm64.mk && lunch
Change-Id: I25faee7ec0a3fff17e1d08b834d868834effda36
Merged-In: I25faee7ec0a3fff17e1d08b834d868834effda36
diff --git a/core/config.mk b/core/config.mk
index f318e1d..e4baefc 100644
--- a/core/config.mk
+++ b/core/config.mk
@@ -808,15 +808,6 @@
     PLATFORM_SEPOLICY_VERSION \
     TOT_SEPOLICY_VERSION \
 
-ifeq ($(PRODUCT_OTA_ENFORCE_VINTF_KERNEL_REQUIREMENTS),)
-  ifdef PRODUCT_SHIPPING_API_LEVEL
-    ifeq (true,$(call math_gt_or_eq,$(PRODUCT_SHIPPING_API_LEVEL),29))
-      PRODUCT_OTA_ENFORCE_VINTF_KERNEL_REQUIREMENTS := true
-    endif
-  endif
-endif
-.KATI_READONLY := PRODUCT_OTA_ENFORCE_VINTF_KERNEL_REQUIREMENTS
-
 ifeq ($(PRODUCT_RETROFIT_DYNAMIC_PARTITIONS),true)
   ifneq ($(PRODUCT_USE_DYNAMIC_PARTITIONS),true)
     $(error PRODUCT_USE_DYNAMIC_PARTITIONS must be true when PRODUCT_RETROFIT_DYNAMIC_PARTITIONS \
diff --git a/core/product_config.mk b/core/product_config.mk
index a088f06..9460357 100644
--- a/core/product_config.mk
+++ b/core/product_config.mk
@@ -376,6 +376,14 @@
   PRODUCT_BUILD_SUPER_PARTITION := $(PRODUCT_USE_DYNAMIC_PARTITIONS)
 endif
 
+ifeq ($(PRODUCT_OTA_ENFORCE_VINTF_KERNEL_REQUIREMENTS),)
+  ifdef PRODUCT_SHIPPING_API_LEVEL
+    ifeq (true,$(call math_gt_or_eq,$(PRODUCT_SHIPPING_API_LEVEL),29))
+      PRODUCT_OTA_ENFORCE_VINTF_KERNEL_REQUIREMENTS := true
+    endif
+  endif
+endif
+
 define product-overrides-config
 $$(foreach rule,$$(PRODUCT_$(1)_OVERRIDES),\
     $$(if $$(filter 2,$$(words $$(subst :,$$(space),$$(rule)))),,\