Add the missing MODULE_DESCRIPTION() to avoid the following warning when
building with W=1:

WARNING: modpost: missing MODULE_DESCRIPTION() in sound/soc/amd/snd-acp-config.o

Fixes: f1bdd8d3 ("ASoC: amd: Add module to determine ACP configuration")
Signed-off-by: Cristian Ciocaltea <cristian.ciocaltea@collabora.com>
Reviewed-by: Emil Velikov <emil.velikov@collabora.com>
Link: https://msgid.link/r/20231209203229.878730-5-cristian.ciocaltea@collabora.comSigned-off-by: Mark Brown <broonie@kernel.org>