soundwire: stream: don't program mockup device ports

Mockup devices don't take part in command/control operations and their
virtual ports shall not be programmed.

Signed-off-by: Bard Liao <yung-chuan.liao@linux.intel.com>
Reviewed-by: Rander Wang <rander.wang@intel.com>
Link: https://lore.kernel.org/r/20210714032209.11284-9-yung-chuan.liao@linux.intel.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>

drivers/soundwire/stream.c

@@ -133,6 +133,9 @@ static int sdw_program_slave_port_params(struct sdw_bus *bus,
 	int ret;
 	u8 wbuf;
 
+	if (s_rt->slave->is_mockup_device)
+		return 0;
+
 	dpn_prop = sdw_get_slave_dpn_prop(s_rt->slave,
 					  s_rt->direction,
 					  t_params->port_num);