[Trust] Add test target for tablets.

Add a target for tablets that we can point to in order to run tests
during pre and post-submit.

Test: local atest
Bug: 228851008
Change-Id: Ie0a1186cc97388c1b9c282c81e8bfcab5eec814b
diff --git a/tests/TrustTests/TEST_MAPPING b/tests/TrustTests/TEST_MAPPING
index b9c46bf..23923ee 100644
--- a/tests/TrustTests/TEST_MAPPING
+++ b/tests/TrustTests/TEST_MAPPING
@@ -11,5 +11,18 @@
         }
       ]
     }
+  ],
+  "trust-tablet": [
+    {
+      "name": "TrustTests",
+      "options": [
+        {
+          "include-filter": "android.trust.test"
+        },
+        {
+          "exclude-annotation": "androidx.test.filters.FlakyTest"
+        }
+      ]
+    }
   ]
 }
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