Add unofficial intent for BatterySaverSchedule screen

We need this for some battery features but don't really think it
needs to be a public API.

Test: can call intent, robotests pass
Bug: 129006417
Change-Id: I1362cea392126c72b20a84e1945d7076c5225b33
diff --git a/src/com/android/settings/Settings.java b/src/com/android/settings/Settings.java
index 97ff613..4d615da 100644
--- a/src/com/android/settings/Settings.java
+++ b/src/com/android/settings/Settings.java
@@ -77,6 +77,7 @@
     public static class FactoryResetActivity extends SettingsActivity { /* empty */ }
     public static class RunningServicesActivity extends SettingsActivity { /* empty */ }
     public static class BatterySaverSettingsActivity extends SettingsActivity { /* empty */ }
+    public static class BatterySaverScheduleSettingsActivity extends SettingsActivity { /* empty */ }
     public static class AccountSyncSettingsActivity extends SettingsActivity { /* empty */ }
     public static class AccountSyncSettingsInAddAccountActivity extends SettingsActivity { /* empty */ }
     public static class CryptKeeperSettingsActivity extends SettingsActivity { /* empty */ }