spi/imx: expose module alias for loading from device-tree

Enable auto loading by udev when spi-imx is compiled as a module.
Signed-off-by: Niels de Vos <ndevos@redhat.com>
Signed-off-by: Mark Brown <broonie@linaro.org>

drivers/spi/spi-imx.c

@@ -619,6 +619,7 @@ static const struct of_device_id spi_imx_dt_ids[] = {
 	{ .compatible = "fsl,imx51-ecspi", .data = &imx51_ecspi_devtype_data, },
 	{ /* sentinel */ }
 };
+MODULE_DEVICE_TABLE(of, spi_imx_dt_ids);
 
 static void spi_imx_chipselect(struct spi_device *spi, int is_active)
 {