Enable mainline checking for mainline_system_arm64

Ensure only /system partition modules defined in mainline_system.mk is
included.

Test: lunch mainline_system_arm64-userdebug; m
Change-Id: I0cf9e28dd95fdc0f8f1eb88aefa07e230223b996
diff --git a/target/product/mainline_system_arm64.mk b/target/product/mainline_system_arm64.mk
index b9ac1e3..4031371 100644
--- a/target/product/mainline_system_arm64.mk
+++ b/target/product/mainline_system_arm64.mk
@@ -14,16 +14,24 @@
 # limitations under the License.
 #
 
+#
+# All components inherited here go to system image
+#
 $(call inherit-product, $(SRC_TARGET_DIR)/product/core_64_bit.mk)
 $(call inherit-product, $(SRC_TARGET_DIR)/product/mainline_system.mk)
 $(call enforce-product-packages-exist,)
 
+# Enable mainline checking
+PRODUCT_ENFORCE_ARTIFACT_PATH_REQUIREMENTS := true
+PRODUCT_ARTIFACT_PATH_REQUIREMENT_WHITELIST += \
+  root/init.zygote64_32.rc \
+
 PRODUCT_BUILD_CACHE_IMAGE := false
 PRODUCT_BUILD_ODM_IMAGE := false
 PRODUCT_BUILD_PRODUCT_IMAGE  := false
-PRODUCT_BUILD_SYSTEM_EXT_IMAGE := false
 PRODUCT_BUILD_RAMDISK_IMAGE := false
 PRODUCT_BUILD_SYSTEM_IMAGE := true
+PRODUCT_BUILD_SYSTEM_EXT_IMAGE := false
 PRODUCT_BUILD_SYSTEM_OTHER_IMAGE := false
 PRODUCT_BUILD_USERDATA_IMAGE := false
 PRODUCT_BUILD_VENDOR_IMAGE := false