Show signal strength indication while in CryptKeeper

Fixes bug 28011104

Change-Id: I66186e3f47b469489578cd776a31bdd6193b6d92
diff --git a/src/com/android/settings/CryptKeeper.java b/src/com/android/settings/CryptKeeper.java
index 594cd38..4214343 100644
--- a/src/com/android/settings/CryptKeeper.java
+++ b/src/com/android/settings/CryptKeeper.java
@@ -341,7 +341,6 @@
     final private static int sWidgetsToDisable = StatusBarManager.DISABLE_EXPAND
             | StatusBarManager.DISABLE_NOTIFICATION_ICONS
             | StatusBarManager.DISABLE_NOTIFICATION_ALERTS
-            | StatusBarManager.DISABLE_SYSTEM_INFO
             | StatusBarManager.DISABLE_HOME
             | StatusBarManager.DISABLE_SEARCH
             | StatusBarManager.DISABLE_RECENT;