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-bootable-recovery_subset
Change-Id: I3c4606959ab70e339df201501356b24953d4fb8a
diff --git a/tests/Android.bp b/tests/Android.bp
index 7f00adc..9ad3d3b 100644
--- a/tests/Android.bp
+++ b/tests/Android.bp
@@ -134,6 +134,10 @@
 
     test_suites: ["device-tests"],
 
+    tidy_timeout_srcs: [
+        "unit/commands_test.cpp",
+    ],
+
     srcs: [
         "unit/*.cpp",
     ],
@@ -192,6 +196,10 @@
         "libupdater_defaults",
     ],
 
+    tidy_timeout_srcs: [
+        "unit/host/imgdiff_test.cpp",
+    ],
+
     srcs: [
         "unit/host/*",
     ],