drm/bridge: add lt9611 in the component system

Make sure the external bridge device is probed ahead
of the DRM device using the component system, because
KMS driver depends on bridge's presence to initialize
its other components.

Change-Id: Ida7310f6133b1b0d1c6c316e6dfaaa891f9653db
CRs-Fixed: 2186423
Signed-off-by: Ray Zhang <rayz@codeaurora.org>