GFX-DISPLAY: [DV10] Fix MIPI panel mode setting fial issue

GFX-DISPLAY: [DV10] Fix MIPI panel mode setting fial issue

BZ: 30737

Connector's detect founction should return its status.

Change-Id: I7b1146a335e7d5071b9ec81dc1e6f1de01964a7c
Signed-off-by: Geng Xiujun <xiujun.geng@intel.com>
Reviewed-on: http://android.intel.com:8080/42638
Reviewed-by: Zhang, Lei <lei.zhang@intel.com>
Reviewed-by: Xu, Randy <randy.xu@intel.com>
Reviewed-by: Tong, BoX <box.tong@intel.com>
Tested-by: Tong, BoX <box.tong@intel.com>
Reviewed-by: buildbot <buildbot@intel.com>
Tested-by: buildbot <buildbot@intel.com>