datetimepicker: Fix white done button for TRDS landscape view

Fixes the white background for the "Done" button in the
    date picker dialog and time picker dialog while in
    landscape orientation and TRDS is on.

Change-Id: I53bf02a21f0bb8a223aca75bb9c658c9a4bc7ef8
datetimepicker: fix done button for TIMEpicker this time

Change-Id: Ia7cb93c3da2e9a85f9b03e2a80be45262b39c73a