Slightly shorten tablet keyboard height

Now key top height is slightly shorter 13.0mm compared to previous 14.0mm.

Bug: 3181068
Change-Id: Ib6f9cfb9269020166e5037467d18133d342d47ec
diff --git a/java/res/layout/input_gingerbread.xml b/java/res/layout/input_gingerbread.xml
index 73cf0a3..1991083 100644
--- a/java/res/layout/input_gingerbread.xml
+++ b/java/res/layout/input_gingerbread.xml
@@ -25,6 +25,7 @@
         android:layout_alignParentBottom="true"
         android:layout_width="match_parent"
         android:layout_height="wrap_content"
+        android:paddingTop="@dimen/keyboard_top_padding"
         android:paddingBottom="@dimen/keyboard_bottom_padding"
         android:background="@drawable/keyboard_dark_background"
         android:textStyle="bold"