ASoC: ak5558: Add MODULE_DEVICE_TABLE

Add missed MODULE_DEVICE_TABLE for the driver can be loaded
automatically at boot.

Fixes: 92088477 ("ASoC: ak5558: Add support for AK5558 ADC driver")
Cc: <stable@vger.kernel.org>
Signed-off-by: Shengjiu Wang <shengjiu.wang@nxp.com>
Link: https://lore.kernel.org/r/1614149872-25510-2-git-send-email-shengjiu.wang@nxp.comSigned-off-by: Mark Brown <broonie@kernel.org>

sound/soc/codecs/ak5558.c

@@ -419,6 +419,7 @@ static const struct of_device_id ak5558_i2c_dt_ids[] __maybe_unused = {
 	{ .compatible = "asahi-kasei,ak5558"},
 	{ }
 };
+MODULE_DEVICE_TABLE(of, ak5558_i2c_dt_ids);
 
 static struct i2c_driver ak5558_i2c_driver = {
 	.driver = {