ARM: dts: msm: disable secondary adv7533 on apq8096proAU ADP

On APQ8096 Auto ADP Lite platform, it only has two displays,
native HDMI and one DSI-HDMI display through ADV7533 bridge
chip. The secondary ADV7533 instance needs to be disabled.

Change-Id: Ibae5c1561ec9f6890f818eeef185dfcf0bc1a62d
Signed-off-by: Jin Li <jinl@codeaurora.org>