drm/mipi-dsi: Set the fwnode for mipi_dsi_device

After commit 3fb1686 ("driver core: fw_devlink: Make cycle
detection more robust"), fw_devlink prints an error when consumer
devices don't have their fwnode set. This used to be ignored silently.

Set the fwnode mipi_dsi_device so fw_devlink can find them and properly
track their dependencies.

This fixes errors like this:
[    0.334054] nwl-dsi 30a00000.mipi-dsi: Failed to create device link with regulator-lcd-1v8
[    0.346964] nwl-dsi 30a00000.mipi-dsi: Failed to create device link with backlight-dsi

Reported-by: Martin Kepplinger <[email protected]>
Link: https://lore.kernel.org/lkml/[email protected]/
Fixes: 068a002 ("drm: Add MIPI DSI bus support")
Signed-off-by: Saravana Kannan <[email protected]>
Tested-by: Martin Kepplinger <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Maxime Ripard <[email protected]>

Author: Saravana Kannan

drivers/gpu/drm/drm_mipi_dsi.c

@@ -221,7 +221,7 @@ mipi_dsi_device_register_full(struct mipi_dsi_host *host,
 		return dsi;
 	}
 
-	dsi->dev.of_node = info->node;
+	device_set_node(&dsi->dev, of_fwnode_handle(info->node));
 	dsi->channel = info->channel;
 	strlcpy(dsi->name, info->type, sizeof(dsi->name));