display: fix up TTM dependency by setting ov# to 0 am: 088aa2e96c
am: 9356d26309

Change-Id: I5d8d4d8915c1a3687420435a23544d12c85e2273
tree: 78b67878788448603ebcc695ba998c7c941d54ad
  1. merrifield/
  2. moorefield_hdmi/