Add PACKAGE_USAGE_STATS permission to shell.

This is needed for calling AM.registerUidObserver.

Fixes: 64400666
Test: cts-tradefed run singleCommand cts-dev -m CtsAppTestCases -t \
      android.app.cts.ActivityManagerProcessStateTest
Change-Id: I4f500d0d8d516b6b8961ea2f8c083add3ae949a9
diff --git a/data/etc/privapp-permissions-platform.xml b/data/etc/privapp-permissions-platform.xml
index 1f55232..7a2df85 100644
--- a/data/etc/privapp-permissions-platform.xml
+++ b/data/etc/privapp-permissions-platform.xml
@@ -280,6 +280,7 @@
         <permission name="android.permission.MOUNT_FORMAT_FILESYSTEMS"/>
         <permission name="android.permission.MOUNT_UNMOUNT_FILESYSTEMS"/>
         <permission name="android.permission.MOVE_PACKAGE"/>
+        <permission name="android.permission.PACKAGE_USAGE_STATS" />
         <permission name="android.permission.READ_FRAME_BUFFER"/>
         <permission name="android.permission.REAL_GET_TASKS"/>
         <permission name="android.permission.REGISTER_CALL_PROVIDER"/>