drm/panel: ld9040: add MODULE_DEVICE_TABLE with SPI IDs

Add proper MODULE_DEVICE_TABLE structure with SPI IDs to allow proper
creation of SPI modalias string and fix autoloading module for this driver.

Signed-off-by: Marek Szyprowski <[e-mail]>
Signed-off-by: Sam Ravnborg <[e-mail]>
Link: https://patchwork.freedesktop.org/patch/msgid/[e-mail]

drivers/gpu/drm/panel/panel-samsung-ld9040.c

···
 };
 MODULE_DEVICE_TABLE(of, ld9040_of_match);
 
+static const struct spi_device_id ld9040_ids[] = {
+	{ "ld9040", },
+	{ /* sentinel */ }
+};
+MODULE_DEVICE_TABLE(spi, ld9040_ids);
+
 static struct spi_driver ld9040_driver = {
 	.probe = ld9040_probe,
 	.remove = ld9040_remove,