mfd: ocelot-spi: Add missing MODULE_DEVICE_TABLE

This patch adds missing MODULE_DEVICE_TABLE definition which generates
correct modalias for automatic loading of this driver when it is built
as an external module.

Fixes: f3e89362 ("mfd: ocelot: Add support for the vsc7512 chip via spi")
Signed-off-by: NYang Yingliang <yangyingliang@huawei.com>
Signed-off-by: NLee Jones <lee@kernel.org>
Link: https://lore.kernel.org/r/20220922103703.1731266-1-yangyingliang@huawei.com

drivers/mfd/ocelot-spi.c

@@ -276,6 +276,7 @@ static const struct spi_device_id ocelot_spi_ids[] = {
 	{ "vsc7512", 0 },
 	{ }
 };
+MODULE_DEVICE_TABLE(spi, ocelot_spi_ids);
 
 static const struct of_device_id ocelot_spi_of_match[] = {
 	{ .compatible = "mscc,vsc7512" },