drm/i915/dp: Remove whitespace at the end of function.

Remove extraline left after intel_dp_configure_protocol_converter.

Signed-off-by: Ankit Nautiyal <ankit.k.nautiyal@intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20221011063447.904649-3-ankit.k.nautiyal@intel.com