drm/i915/sdvo: Add missing TV filters

Reference:

  Bug 28634 - missing TV parameter "Flicker Filter"
  https://bugs.freedesktop.org/show_bug.cgi?id=28634

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Eric Anholt <eric@anholt.net>
2 files changed