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As for external DP sink and branch devices read and print the DP descriptor for eDP and LSPCON devices as well to aid debugging. v2: - Split out this change to a separate patch. (Jani) Cc: Jani Nikula <jani.nikula@intel.com> Signed-off-by: Imre Deak <imre.deak@intel.com> Reviewed-by: Jani Nikula <jani.nikula@intel.com> Link: http://patchwork.freedesktop.org/patch/msgid/1477326811-30431-7-git-send-email-imre.deak@intel.com