Needs more columns for large screen device

If a horizontal size of a device display exceeds 960 pixels,
the testSetHorizontalSpacing() will be failed.
Because a space between views doesn't equal zero.
So the parameter of GridView#setNumColumns() should be slightly
large rether than 20 for large screen device.

Change-Id: Ic033ca6741eb70c2112104caf1bd93f803f8283b
diff --git a/tests/tests/widget/src/android/widget/cts/GridViewTest.java b/tests/tests/widget/src/android/widget/cts/GridViewTest.java
old mode 100644
new mode 100755
index 2131965..6bd094f
--- a/tests/tests/widget/src/android/widget/cts/GridViewTest.java
+++ b/tests/tests/widget/src/android/widget/cts/GridViewTest.java
@@ -312,7 +312,7 @@
         mGridView = findGridViewById(R.id.gridview);
         // Number of columns should be big enough, otherwise the
         // horizontal spacing cannot be correctly verified.
-        mGridView.setNumColumns(20);
+        mGridView.setNumColumns(22);
 
         // this test case can not be ran in UI thread.
         mActivity.runOnUiThread(new Runnable() {