spi: rpc-if: Add missing MODULE_DEVICE_TABLE

Add missing MODULE_DEVICE_TABLE definition for automatic loading of the
driver when it is built as a module.

Fixes: eb8d6d46 ("spi: add Renesas RPC-IF driver")
Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://patch.msgid.link/20240731072955.224125-1-biju.das.jz@bp.renesas.comSigned-off-by: Mark Brown <broonie@kernel.org>

drivers/spi/spi-rpc-if.c

@@ -198,9 +198,16 @@ static int __maybe_unused rpcif_spi_resume(struct device *dev)
 
 static SIMPLE_DEV_PM_OPS(rpcif_spi_pm_ops, rpcif_spi_suspend, rpcif_spi_resume);
 
+static const struct platform_device_id rpc_if_spi_id_table[] = {
+	{ .name = "rpc-if-spi" },
+	{ /* sentinel */ }
+};
+MODULE_DEVICE_TABLE(platform, rpc_if_spi_id_table);
+
 static struct platform_driver rpcif_spi_driver = {
 	.probe	= rpcif_spi_probe,
 	.remove_new = rpcif_spi_remove,
+	.id_table = rpc_if_spi_id_table,
 	.driver = {
 		.name	= "rpc-if-spi",
 #ifdef CONFIG_PM_SLEEP