ASoC: fsl: add missing MODULE_DESCRIPTION() macro

make allmodconfig && make W=1 C=1 reports:
WARNING: modpost: missing MODULE_DESCRIPTION() in sound/soc/fsl/imx-pcm-dma.o

Add the missing invocation of the MODULE_DESCRIPTION() macro.
Signed-off-by: Jeff Johnson <quic_jjohnson@quicinc.com>
Link: https://msgid.link/r/20240602-md-snd-fsl-imx-pcm-dma-v1-1-e7efc33c6bf3@quicinc.comSigned-off-by: Mark Brown <broonie@kernel.org>

sound/soc/fsl/imx-pcm-dma.c

@@ -50,4 +50,5 @@ int imx_pcm_dma_init(struct platform_device *pdev)
 }
 EXPORT_SYMBOL_GPL(imx_pcm_dma_init);
 
+MODULE_DESCRIPTION("Freescale i.MX PCM DMA interface");
 MODULE_LICENSE("GPL");