Legacy custom views now get properly layed out again

Since the minheight grew, all notifications grew.
Legacy custom notifications need to stay the same
height though.

Change-Id: I469c448014c3d3c31526466d06a60ac44838b274
diff --git a/packages/SystemUI/src/com/android/systemui/statusbar/phone/NotificationPanelView.java b/packages/SystemUI/src/com/android/systemui/statusbar/phone/NotificationPanelView.java
index d2fae6f..c0e3ec1 100644
--- a/packages/SystemUI/src/com/android/systemui/statusbar/phone/NotificationPanelView.java
+++ b/packages/SystemUI/src/com/android/systemui/statusbar/phone/NotificationPanelView.java
@@ -1694,7 +1694,7 @@
     }
 
     private float getFadeoutAlpha() {
-        float alpha = (getNotificationsTopY() + mNotificationStackScroller.getItemHeight())
+        float alpha = (getNotificationsTopY() + mNotificationStackScroller.getFirstItemMinHeight())
                 / (mQsMinExpansionHeight + mNotificationStackScroller.getBottomStackPeekSize()
                 - mNotificationStackScroller.getCollapseSecondCardPadding());
         alpha = Math.max(0, Math.min(alpha, 1));