[rpc_binder] Use RPC binder over UDS for authfs_service

Test: atest ComposHostTestCases
Bug: 222479468
Change-Id: I33bc407292c4087fabc5ca4bbbc46ee902eb8d10
diff --git a/authfs/service/authfs_service.rc b/authfs/service/authfs_service.rc
index 9ad0ce6..7edb1ca 100644
--- a/authfs/service/authfs_service.rc
+++ b/authfs/service/authfs_service.rc
@@ -1,2 +1,3 @@
 service authfs_service /system/bin/authfs_service
     disabled
+    socket authfs_service stream 0666 root system