Mark tests part of the device-tests platinum set

This will allow to build them more effectively.
This has no impact on the test execution itself.

Change-Id: I76bbb06b6b5f0e21f096b80da9062863294d2ff4
Test: presubmit
Bug: 341947105
diff --git a/tests/FlickerTests/IME/Android.bp b/tests/FlickerTests/IME/Android.bp
index 1141e5f..358c490 100644
--- a/tests/FlickerTests/IME/Android.bp
+++ b/tests/FlickerTests/IME/Android.bp
@@ -55,6 +55,10 @@
     defaults: ["FlickerTestsDefault"],
     manifest: "AndroidManifest.xml",
     test_config_template: "AndroidTestTemplate.xml",
+    test_suites: [
+        "device-tests",
+        "device-platinum-tests",
+    ],
     srcs: [":FlickerTestsIme1-src"],
     static_libs: [
         "FlickerTestsBase",