ASoC: kirkwood: make snd_pcm_hardware const

Make this const as it is either passed as the 2nd argument
to the function snd_soc_set_runtime_hwparams, which is const or used in
a copy operation.
Done using Coccinelle.
Signed-off-by: Bhumika Goyal <bhumirks@gmail.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

sound/soc/kirkwood/kirkwood-dma.c

@@ -27,7 +27,7 @@ static struct kirkwood_dma_data *kirkwood_priv(struct snd_pcm_substream *subs)
 	return snd_soc_dai_get_drvdata(soc_runtime->cpu_dai);
 }
 
-static struct snd_pcm_hardware kirkwood_dma_snd_hw = {
+static const struct snd_pcm_hardware kirkwood_dma_snd_hw = {
 	.info = SNDRV_PCM_INFO_INTERLEAVED |
 		SNDRV_PCM_INFO_MMAP |
 		SNDRV_PCM_INFO_MMAP_VALID |