Allow navigation to TrustedCredentials User Certs by intent.

Adds an activity, and an entry in the AndroidManifest.xml

Change-Id: Ic3cfa1f3bdc3f2eefc290195679011c224496d63
diff --git a/src/com/android/settings/Settings.java b/src/com/android/settings/Settings.java
index a9d35a2..cd306fc 100644
--- a/src/com/android/settings/Settings.java
+++ b/src/com/android/settings/Settings.java
@@ -334,6 +334,7 @@
         NotificationAccessSettings.class.getName(),
         ManageAccountsSettings.class.getName(),
         PrintingSettings.class.getName(),
+        TrustedCredentialsSettings.class.getName()
     };
 
     @Override
@@ -958,4 +959,5 @@
     public static class NotificationAccessSettingsActivity extends Settings { /* empty */ }
     public static class UsbSettingsActivity extends Settings { /* empty */ }
     public static class NfcPaymentActivity extends Settings { /* empty */ }
+    public static class TrustedCredentialsSettingsActivity extends Settings { /* empty */ }
 }