video: dw_mipi_dsi: missing device to log debug

Missing udevice to struct dw_mipi_dsi to log trace.

Signed-off-by: Yannick Fertre <yannick.fertre@foss.st.com>
Signed-off-by: Patrick Delaunay <patrick.delaunay@foss.st.com>
Acked-by: Yannick Fertre <yannick.fertre@foss.st.com>
Reviewed-by: Patrice Chotard <patrice.chotard@foss.st.com>
diff --git a/drivers/video/dw_mipi_dsi.c b/drivers/video/dw_mipi_dsi.c
index 4dde648..a5beed3 100644
--- a/drivers/video/dw_mipi_dsi.c
+++ b/drivers/video/dw_mipi_dsi.c
@@ -797,6 +797,7 @@
 	dsi->phy_ops = phy_ops;
 	dsi->max_data_lanes = max_data_lanes;
 	dsi->device = device;
+	dsi->dsi_host.dev = (struct device *)dev;
 	dsi->dsi_host.ops = &dw_mipi_dsi_host_ops;
 	device->host = &dsi->dsi_host;