Initial support for v12.

Author: Alexhuszagh

docker/android-system.sh

@@ -177,6 +177,13 @@ EOF
             # we disable all tests, but can't remove this dependency
             python3 ./repo sync -c external/googletest
         fi
+        if [[ "${major_version}" -ge 12 ]]; then
+            python3 ./repo sync -c external/apache-xml
+            python3 ./repo sync -c external/okhttp
+            python3 ./repo sync -c external/starlark-go
+            python3 ./repo sync -c prebuilts/vndk/v30
+            python3 ./repo sync -c prebuilts/vndk/v31
+        fi
 
         case "${arch}" in
             arm|arm64)