drm/msm: only set need cdm for INTF_0

Only DP INTF_0 should need cdm block, other
INTFs do not need cdm.

Change-Id: Iff355dae456ed432efd84dff72ec85b83dbb93f2
Signed-off-by: Yuan Zhao <yzhao@codeaurora.org>
Signed-off-by: Narender Ankam <nankam@codeaurora.org>
Signed-off-by: Chirag Khurana <ckhurana@codeaurora.org>