Add Dynamic tiles

Add new CategoryKey for screens below:
    about_legal.xml
    my_device_info.xml
    battery_saver_settings.xml

Bug: 113249409
Change-Id: I3cdad9b6ceeba0df3e0e9db4607daffcc5cbdc8b
Merged-In: I3cdad9b6ceeba0df3e0e9db4607daffcc5cbdc8b
1 file changed