ASoC: wm_adsp: Handle old .bin files

Older .bin files report the global coefficients as absolute address writes
to zero; maintain compatibility with them.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>

sound/soc/codecs/wm_adsp.h

@@ -46,6 +46,8 @@ struct wm_adsp {
 
 	struct list_head alg_regions;
 
+	int fw_id;
+
 	const struct wm_adsp_region *mem;
 	int num_mems;