aconfig_storage: setup RO partitions aconfig storage files SELinux
policy

system, system_ext, product and vendor partitions have aconfig storage
files under /<partition>/etc/aconfig dir. need to grant access to
aconfigd.

Bug: b/312459182
Test: m and tested with AVD
Change-Id: I9750c24ffa26994e4f5deadd9d772e31211a446a
diff --git a/private/file.te b/private/file.te
index 6d8c923..c4341af 100644
--- a/private/file.te
+++ b/private/file.te
@@ -151,3 +151,9 @@
 
 # Type for aconfig daemon socket
 type aconfigd_socket, file_type, coredomain_socket;
+
+# Type for /(system|system_ext|product)/etc/aconfig
+type system_aconfig_storage_file, system_file_type, file_type;
+
+# Type for /vendor/etc/aconfig
+type vendor_aconfig_storage_file, vendor_file_type, file_type;