drm/i915: Intel panel downclock cleanup

Let's switch to use dev_priv instead of dev when calling
intel_find_panel_downclock() function.

Signed-off-by: Mika Kahola <mika.kahola@intel.com>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1481616169-16210-3-git-send-email-mika.kahola@intel.com
diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c
index eb74399..6c05a2b 100644
--- a/drivers/gpu/drm/i915/intel_dp.c
+++ b/drivers/gpu/drm/i915/intel_dp.c
@@ -5528,7 +5528,7 @@ intel_dp_drrs_init(struct intel_connector *intel_connector,
 	}
 
 	downclock_mode = intel_find_panel_downclock
-					(dev, fixed_mode, connector);
+					(dev_priv, fixed_mode, connector);
 
 	if (!downclock_mode) {
 		DRM_DEBUG_KMS("Downclock mode is not found. DRRS not supported\n");