ASoC: kirkwood: make kirkwood_soc_platform const

Make kirkwood_soc_platform const as it only passed to a const argument
of the function snd_soc_register_platform in the file referencing it.
Make the declaration const too.

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

@@ -318,7 +318,7 @@ static void kirkwood_dma_free_dma_buffers(struct snd_pcm *pcm)
 	}
 }
 
-struct snd_soc_platform_driver kirkwood_soc_platform = {
+const struct snd_soc_platform_driver kirkwood_soc_platform = {
 	.ops		= &kirkwood_dma_ops,
 	.pcm_new	= kirkwood_dma_new,
 	.pcm_free	= kirkwood_dma_free_dma_buffers,

sound/soc/kirkwood/kirkwood.h

@@ -143,6 +143,6 @@ struct kirkwood_dma_data {
 	int burst;
 };
 
-extern struct snd_soc_platform_driver kirkwood_soc_platform;
+extern const struct snd_soc_platform_driver kirkwood_soc_platform;
 
 #endif