ASoC: qcom: add missing MODULE_DESCRIPTION() macro

make allmodconfig && make W=1 C=1 reports:
WARNING: modpost: missing MODULE_DESCRIPTION() in sound/soc/qcom/snd-soc-qcom-sdw.o

Add the missing invocation of the MODULE_DESCRIPTION() macro.
Signed-off-by: Jeff Johnson <quic_jjohnson@quicinc.com>
Link: https://msgid.link/r/20240603-md-snd-soc-qcom-sdw-v1-1-101ea8bcdd38@quicinc.comSigned-off-by: Mark Brown <broonie@kernel.org>

sound/soc/qcom/sdw.c

@@ -160,4 +160,5 @@ int qcom_snd_sdw_hw_free(struct snd_pcm_substream *substream,
 	return 0;
 }
 EXPORT_SYMBOL_GPL(qcom_snd_sdw_hw_free);
+MODULE_DESCRIPTION("Qualcomm ASoC SoundWire helper functions");
 MODULE_LICENSE("GPL");