Move sepolicy finalization to vintf

Ignore-AOSP-First: b/304316873#comment10

Bug: 314010177
Test: ABTD run with fina-1 and fina-2
Change-Id: I5324eb0c619b9d3ddc5fcda0ce52f614f8596f6c
diff --git a/tools/finalization/environment.sh b/tools/finalization/environment.sh
index d9c42c8..b2d75bb 100755
--- a/tools/finalization/environment.sh
+++ b/tools/finalization/environment.sh
@@ -23,4 +23,7 @@
 # 'rel' - branch is finalized, switched to REL
 export FINAL_STATE='unfinalized'
 
-export BUILD_FROM_SOURCE_STUB=true
\ No newline at end of file
+export BUILD_FROM_SOURCE_STUB=true
+
+# FINAL versions for VINTF
+export FINAL_BOARD_API_LEVEL=$(TARGET_RELEASE=fina_1 $top/build/soong/soong_ui.bash --dumpvar-mode RELEASE_BOARD_API_LEVEL)