intel_dp_mst_is_slave_trans
if (intel_dp_mst_is_slave_trans(crtc_state))
if (intel_dp_mst_is_slave_trans(new_crtc_state)) {
!intel_dp_mst_is_slave_trans(old_crtc_state))
if (intel_dp_mst_is_slave_trans(new_crtc_state) ||
bool intel_dp_mst_is_slave_trans(const struct intel_crtc_state *crtc_state);