ASoC: Intel: Skylake: make snd_pcm_hardware const

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

sound/soc/intel/skylake/skl-pcm.c

@@ -33,7 +33,7 @@
 #define HDA_STEREO 2
 #define HDA_QUAD 4
 
-static struct snd_pcm_hardware azx_pcm_hw = {
+static const struct snd_pcm_hardware azx_pcm_hw = {
 	.info =			(SNDRV_PCM_INFO_MMAP |
 				 SNDRV_PCM_INFO_INTERLEAVED |
 				 SNDRV_PCM_INFO_BLOCK_TRANSFER |