Add sepolicy prebuilt dirs and variables to config

These are used when we build vendor sepolicy against old plat sepolicy.

Bug: 33691272
Test: build
Change-Id: I847108539b3b9d7d25c0fad9eddc017275a564be
diff --git a/core/soong_config.mk b/core/soong_config.mk
index 617abdf..07dafc7 100644
--- a/core/soong_config.mk
+++ b/core/soong_config.mk
@@ -191,6 +191,10 @@
 
 $(call add_json_list, BoardPlatVendorPolicy,             $(BOARD_PLAT_VENDOR_POLICY))
 $(call add_json_list, BoardReqdMaskPolicy,               $(BOARD_REQD_MASK_POLICY))
+$(call add_json_list, BoardSystemExtPublicPrebuiltDirs,  $(BOARD_SYSTEM_EXT_PUBLIC_PREBUILT_DIRS))
+$(call add_json_list, BoardSystemExtPrivatePrebuiltDirs, $(BOARD_SYSTEM_EXT_PRIVATE_PREBUILT_DIRS))
+$(call add_json_list, BoardProductPublicPrebuiltDirs,    $(BOARD_PRODUCT_PUBLIC_PREBUILT_DIRS))
+$(call add_json_list, BoardProductPrivatePrebuiltDirs,   $(BOARD_PRODUCT_PRIVATE_PREBUILT_DIRS))
 $(call add_json_list, BoardVendorSepolicyDirs,           $(BOARD_VENDOR_SEPOLICY_DIRS) $(BOARD_SEPOLICY_DIRS))
 $(call add_json_list, BoardOdmSepolicyDirs,              $(BOARD_ODM_SEPOLICY_DIRS))
 $(call add_json_list, BoardVendorDlkmSepolicyDirs,       $(BOARD_VENDOR_DLKM_SEPOLICY_DIRS))