re-use status bar DateView in QuickSettings.

Bug: 7221083
Change-Id: Ic1cb7118d8e5f83a8e5e1101a609791a1e0fbab1

Author: cwren

packages/SystemUI/res/layout/quick_settings_tile_time.xml

@@ -29,10 +29,11 @@
         android:hand_hour="@drawable/ic_qs_clock_hour"
         android:hand_minute="@drawable/ic_qs_clock_minute"
         />
-    <com.android.systemui.statusbar.policy.QuickSettingsDateView
+    <com.android.systemui.statusbar.policy.DateView
         android:textAppearance="@style/TextAppearance.QuickSettings.TileView"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
         android:layout_gravity="center_horizontal"
+        android:gravity="center"
         />
-</LinearLayout>
+</LinearLayout>