ASoC: wm_adsp: Add missing const from region definitions

Signed-off-by: NCharles Keepax <ckeepax@opensource.wolfsonmicro.com>
Signed-off-by: NMark Brown <broonie@kernel.org>

sound/soc/codecs/wm_adsp.c

@@ -325,7 +325,7 @@ struct wm_adsp_buffer_region_def {
 	unsigned int size_offset;
 };
 
-static struct wm_adsp_buffer_region_def default_regions[] = {
+static const struct wm_adsp_buffer_region_def default_regions[] = {
 	{
 		.mem_type = WMFW_ADSP2_XM,
 		.base_offset = HOST_BUFFER_FIELD(X_buf_base),
@@ -347,7 +347,7 @@ struct wm_adsp_fw_caps {
 	u32 id;
 	struct snd_codec_desc desc;
 	int num_regions;
-	struct wm_adsp_buffer_region_def *region_defs;
+	const struct wm_adsp_buffer_region_def *region_defs;
 };
 
 static const struct wm_adsp_fw_caps ctrl_caps[] = {