scripts: Add timer-unittest

Bug: 79993976
Change-Id: Id4b39215c8de358dfb91de562987698a47e92855
diff --git a/scripts/build-config b/scripts/build-config
index 91e11c3..6b29294 100644
--- a/scripts/build-config
+++ b/scripts/build-config
@@ -98,6 +98,7 @@
             "qemu-generic-arm64-test-debug",
         ],
         unit_tests=[
+            "com.android.timer-unittest",
             "com.android.ipc-unittest.ctrl",
             "com.android.storage-unittest.tp.init",
             "com.android.storage-unittest.tp.check",