init.rc: add a new maps dir under /metadata/aconfig dir

Bug: b/312444587
Test: m and avd
Change-Id: Idf19d314b51cc409e58d6a2f2ae1831bfc3d717d
diff --git a/rootdir/init.rc b/rootdir/init.rc
index e8b737d..5953769 100644
--- a/rootdir/init.rc
+++ b/rootdir/init.rc
@@ -637,6 +637,7 @@
 
     mkdir /metadata/aconfig 0775 root system
     mkdir /metadata/aconfig/flags 0770 root system
+    mkdir /metadata/aconfig/maps 0775 root system
     mkdir /metadata/aconfig/boot 0775 root system
 
     mkdir /metadata/aconfig_test_missions 0775 root system