Update seekbar

based on https://github.com/SlimRoms/frameworks_base/commit/424a61efe50cfbe9ffa5f998817054a8369bdc1a

Change-Id: Ia0ffce39ab0952d34a953e8a551071c83d6d4a95
Signed-off-by: Dirk Rettschlag <dirk.rettschlag@gmail.com>