drm/panel: sony-td4353-jdi: Enable prepare_prev_first

The DSI host must be enabled before our prepare function can run, which
has to send its init sequence over DSI. Without enabling the host first
the panel will not probe.

Fixes: 9e15123eca79 ("drm/msm/dsi: Stop unconditionally powering up DSI hosts at modeset")
Signed-off-by: Marijn Suijten <[e-mail]>
Reviewed-by: Douglas Anderson <[e-mail]>
Reviewed-by: AngeloGioacchino Del Regno <[e-mail]>
Reviewed-by: Martin Botka <[e-mail]>
Signed-off-by: Douglas Anderson <[e-mail]>
Link: https://patch.msgid.link/[e-mail]

drivers/gpu/drm/panel/panel-sony-td4353-jdi.c

···
 	if (ret)
 		return dev_err_probe(dev, ret, "Failed to get backlight\n");
 
+	ctx->panel.prepare_prev_first = true;
+
 	drm_panel_add(&ctx->panel);
 
 	ret = mipi_dsi_attach(dsi);