Add id for PagedTileLayout

Add an id so the element can be found by ui tests

Test: mp sysuig
Bug: 150467479
Change-Id: I2657b8d5baee88d3866717fc72d3ad47abdb358b
diff --git a/packages/SystemUI/res/layout/qs_paged_tile_layout.xml b/packages/SystemUI/res/layout/qs_paged_tile_layout.xml
index 8878786..46a7cf6 100644
--- a/packages/SystemUI/res/layout/qs_paged_tile_layout.xml
+++ b/packages/SystemUI/res/layout/qs_paged_tile_layout.xml
@@ -17,6 +17,7 @@
 
 <com.android.systemui.qs.PagedTileLayout
     xmlns:android="http://schemas.android.com/apk/res/android"
+    android:id="@+id/qs_pager"
     android:layout_width="match_parent"
     android:layout_height="0dp"
     android:layout_weight="1"