Fix widget update issue

This fixes an issue where widgets weren't being updated.  It
was caused by creating widgets with the wrong package id.
Keyguard used to be identified with package "android" when it
was running in the system proces.  Now that it's separate, we need
to explicitly pass in the package name for keyguard ("com.android.keyguard")
when we allocate app widget ids.

Change-Id: I4911be8533ea4d24c64669fe98d03f39a684f55a

src/com/android/settings/KeyguardAppWidgetPickActivity.java

@@ -517,8 +517,8 @@ public class KeyguardAppWidgetPickActivity extends Activity
                     // Found in KeyguardHostView.java
                     final int KEYGUARD_HOST_ID = 0x4B455947;
                     int userId = ActivityManager.getCurrentUser();
-                    mAppWidgetId = AppWidgetHost.allocateAppWidgetIdForSystem(KEYGUARD_HOST_ID,
-                            userId);
+                    mAppWidgetId = AppWidgetHost.allocateAppWidgetIdForPackage(KEYGUARD_HOST_ID,
+                            userId, "com.android.keyguard");
                 }
                 mAppWidgetManager.bindAppWidgetId(
                         mAppWidgetId, intent.getComponent(), mExtraConfigureOptions);