Move qsb according to spec.

Bug: 175329686
Test: visual test
      checked 5x5 and confirmed no visual change
      checked 4x5 and confirmed visual change
      - tested various display sizes to ensure no overlapping is caused

Change-Id: I95a80b484516f634fa13347534810c7a51cecc8d
Merged-In: I95a80b484516f634fa13347534810c7a51cecc8d
diff --git a/res/values/dimens.xml b/res/values/dimens.xml
index bc63c06..270c92e 100644
--- a/res/values/dimens.xml
+++ b/res/values/dimens.xml
@@ -41,6 +41,7 @@
 
     <!-- Scalable Grid -->
     <dimen name="scalable_grid_left_right_margin">22dp</dimen>
+    <dimen name="scalable_grid_qsb_bottom_margin">42dp</dimen>
 
     <!-- Workspace page indicator -->
     <dimen name="workspace_page_indicator_height">24dp</dimen>