SUW: update TV theming for 12

* setupdesign now uses a layout-land
* Rearrange welcome activity
* Add a padding of 56dp for each activity based on
  external/setupdesign/main/res/values/dimens.xml
  ´sud_glif_icon_margin_top´

Change-Id: I77ec3d1c3d62a66aeb76233eccafbea96804e701