Status bar icons 15 dp

Shrink all status bar icons by 2dp. This means setting a scale factor on
anything that is a StatusBarIconView, and manually scaling down wifi and
mobile data groups.

Also fix the padding between the mobile data view and the battery

Also snuck in a fix for the battery saver icon clipping on QS

Change-Id: I5f5430d9e9c66f5c2794dcf4974cf18aa3bff061
Test: visual
Fixes: 74985733
Fixes: 79967193
Bug: 77822905
diff --git a/packages/SystemUI/res/layout/system_icons.xml b/packages/SystemUI/res/layout/system_icons.xml
index 9237477..9de46d8 100644
--- a/packages/SystemUI/res/layout/system_icons.xml
+++ b/packages/SystemUI/res/layout/system_icons.xml
@@ -24,7 +24,7 @@
         android:layout_width="0dp"
         android:layout_weight="1"
         android:layout_height="match_parent"
-        android:paddingEnd="4dp"
+        android:paddingEnd="@dimen/signal_cluster_battery_padding"
         android:gravity="center_vertical"
         android:orientation="horizontal"/>