[benchmarks][authfs] Run AuthFsBenchmarks in postsubmit

Test: atest AuthFsHostTest AuthFsBenchmarks
Bug: 254050475
Change-Id: I2ff801532c73a8b7dcde89c0d87bdf339c447ab4
diff --git a/authfs/TEST_MAPPING b/authfs/TEST_MAPPING
index 3c84b76..ab6111b 100644
--- a/authfs/TEST_MAPPING
+++ b/authfs/TEST_MAPPING
@@ -6,5 +6,10 @@
     {
       "name": "AuthFsHostTest"
     }
+  ],
+  "avf-postsubmit": [
+    {
+      "name": "AuthFsBenchmarks"
+    }
   ]
 }