Tilapia: add dimen.xml for custom lockscreen widget height

Change-Id: I07a783d470cc6c1aa6f0411b23ee6db47de24462
Signed-off-by: Dirk Rettschlag <dirk.rettschlag@gmail.com>
Merge "Tilapia: add dimen.xml for custom lockscreen widget height" into jb-mr1