drm/i915: Remove pointless if-else from sdvo code

The return value is a bool so we can just return the result of
the biwise AND. The compiler will take care of the rest.
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180621174658.18823-1-ville.syrjala@linux.intel.comReviewed-by: Chris Wilson <chris@chris-wilson.co.uk>

drivers/gpu/drm/i915/intel_sdvo.c

@@ -1401,10 +1401,7 @@ static bool intel_sdvo_connector_get_hw_state(struct intel_connector *connector)
 
 	intel_sdvo_get_active_outputs(intel_sdvo, &active_outputs);
 
-	if (active_outputs & intel_sdvo_connector->output_flag)
-		return true;
-	else
-		return false;
+	return active_outputs & intel_sdvo_connector->output_flag;
 }
 
 bool intel_sdvo_port_enabled(struct drm_i915_private *dev_priv,