Add @UnsupportedAppUsage annotations

For packages:
  android.os

This is an automatically generated CL. See go/UnsupportedAppUsage
for more details.

Exempted-From-Owner-Approval: Mechanical changes to the codebase
which have been approved by Android API council and announced on
android-eng@

Bug: 110868826
Test: m
Change-Id: I4ece0a3f37f88fc2508cb965092aed7cabc61819
diff --git a/Android.bp b/Android.bp
index f4e8b63..f34d6d2 100644
--- a/Android.bp
+++ b/Android.bp
@@ -1132,6 +1132,7 @@
         "core/java/android/annotation/Nullable.java",
         "core/java/android/annotation/SystemApi.java",
         "core/java/android/annotation/TestApi.java",
+        "core/java/android/annotation/UnsupportedAppUsage.java",
         "core/java/android/os/HwBinder.java",
         "core/java/android/os/HwBlob.java",
         "core/java/android/os/HwParcel.java",