Add icons to the main static storage setting prefs.

The dynamic user icons require more than just XML changes to
successfully fetch the badged user icons and are coming in a future
patch.

Bug: 35801039
Test: Manual -- this is purely XML and comment changes.
Change-Id: Id493c0335037a5c6e4f8b4734700611bfc0da7f1

src/com/android/settings/deviceinfo/storage/UserProfileController.java

@@ -66,6 +66,7 @@ public class UserProfileController extends PreferenceController implements
         mStoragePreference.setOrder(mPreferenceOrder);
         mStoragePreference.setKey(PREFERENCE_KEY_BASE + mUser.id);
         mStoragePreference.setTitle(mUser.name);
+        // TODO(b/36252572): Set user icon here.
         screen.addPreference(mStoragePreference);
     }