Fix number of pages in PagedTileLayout

If there's less that one full page of tiles, do not create an extra page
(as there's always a minimum of 1 page).

Fixes: 138625713
Test: manual with less and more than one page of tiles
Change-Id: I59a111f55ce3b00b94d8fb1a0594497c5a3af35c

packages/SystemUI/src/com/android/systemui/qs/PagedTileLayout.java

@@ -248,7 +248,9 @@ public class PagedTileLayout extends ViewPager implements QSTileLayout {
         int numPages = Math.max(nTiles / mPages.get(0).maxTiles(), 1);
 
         // Add one more not full page if needed
-        numPages += (nTiles % mPages.get(0).maxTiles() == 0 ? 0 : 1);
+        if (nTiles > numPages * mPages.get(0).maxTiles()) {
+            numPages++;
+        }
 
         final int NP = mPages.size();
         for (int i = 0; i < NP; i++) {