ASoC: ab8500: Add missing module description

Now that make W=1 starts complaining the lack of MODULE_DESCRIPTION(),
let's add the missing information.

Suggested-by: Andy Shevchenko <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Takashi Iwai <[email protected]>
Reviewed-by: Andy Shevchenko <[email protected]>
Reviewed-by: Dragan Simic <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Mark Brown <[email protected]>

Author: tiwai

sound/soc/codecs/ab8500-codec.c

@@ -2571,4 +2571,5 @@ static struct platform_driver ab8500_codec_platform_driver = {
 };
 module_platform_driver(ab8500_codec_platform_driver);
 
+MODULE_DESCRIPTION("ASoC AB8500 codec driver");
 MODULE_LICENSE("GPL v2");