Scale notifications on lockscreen for 420 dpi devices

Bug: 23299488
Change-Id: Ied4505532aad41a3a1469efce2464a491661fb6c
diff --git a/packages/SystemUI/src/com/android/systemui/statusbar/stack/StackScrollAlgorithm.java b/packages/SystemUI/src/com/android/systemui/statusbar/stack/StackScrollAlgorithm.java
index 82064a7..cf696a1 100644
--- a/packages/SystemUI/src/com/android/systemui/statusbar/stack/StackScrollAlgorithm.java
+++ b/packages/SystemUI/src/com/android/systemui/statusbar/stack/StackScrollAlgorithm.java
@@ -127,7 +127,7 @@
         mCollapseSecondCardPadding = context.getResources().getDimensionPixelSize(
                 R.dimen.notification_collapse_second_card_padding);
         mScaleDimmed = context.getResources().getDisplayMetrics().densityDpi
-                >= DisplayMetrics.DENSITY_XXHIGH;
+                >= DisplayMetrics.DENSITY_420;
     }
 
     public boolean shouldScaleDimmed() {