Add clipboard toast suppression permission.

Grant that permission to SystemUI so that the clipboard overlay doesn't
generate a toast.

Test: Manual verification that toast is suppressed only after sysui
      requests the permission.
Test: atest ClipboardManagerTest
Bug: 216143343

Change-Id: Ia527a5d878f026b7939042b4b675037482846fbb
diff --git a/packages/SystemUI/AndroidManifest.xml b/packages/SystemUI/AndroidManifest.xml
index 5989381..3197354 100644
--- a/packages/SystemUI/AndroidManifest.xml
+++ b/packages/SystemUI/AndroidManifest.xml
@@ -308,6 +308,7 @@
 
     <!-- To change system language (HDMI CEC) -->
     <uses-permission android:name="android.permission.CHANGE_CONFIGURATION" />
+    <uses-permission android:name="android.permission.SUPPRESS_CLIPBOARD_ACCESS_NOTIFICATION" />
 
     <protected-broadcast android:name="com.android.settingslib.action.REGISTER_SLICE_RECEIVER" />
     <protected-broadcast android:name="com.android.settingslib.action.UNREGISTER_SLICE_RECEIVER" />