Add timed out test files to tidy_timeout_srcs

* Timed out runs do not show any warning messages.
* These test files cannot finish clang-tidy runs with
  the following settings:
    TIDY_TIMEOUT=90
    WITH_TIDY=1
    CLANG_ANALYZER_CHECKS=1
* When TIDY_TIMEOUT is set, in Android continuous builds,
  tidy_timeout_srcs files will not be compiled by clang-tidy.
  When developers build locally without TIDY_TIMEOUT,
  tidy_timeout_srcs files will be compiled.
* Some of these test modules may be split into smaller ones,
  or disable some time consuming checks, and then
  enable clang-tidy to run within limited time.

Bug: 201099167
Test: make droid tidy-hardware-interfaces_subset
Change-Id: I1de28f1572fff368f67eab512fffec9f2e5c2a9b
diff --git a/graphics/composer/2.2/vts/functional/Android.bp b/graphics/composer/2.2/vts/functional/Android.bp
index 36f3c00..e45696d 100644
--- a/graphics/composer/2.2/vts/functional/Android.bp
+++ b/graphics/composer/2.2/vts/functional/Android.bp
@@ -30,6 +30,10 @@
         // Needed for librenderengine
         "skia_deps",
     ],
+    tidy_timeout_srcs: [
+        "VtsHalGraphicsComposerV2_2ReadbackTest.cpp",
+        "VtsHalGraphicsComposerV2_2TargetTest.cpp",
+    ],
     srcs: [
         "VtsHalGraphicsComposerV2_2ReadbackTest.cpp",
         "VtsHalGraphicsComposerV2_2TargetTest.cpp",