ASoC: codecs: wm0010: use DECLARE_COMPLETION_ONSTACK() macro

Follow recommendation in Documentation/scheduler/completion.rst and
use macro to declare local 'struct completion'

Signed-off-by: Pierre-Louis Bossart <[e-mail]>
Acked-by: Charles Keepax <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Mark Brown <[e-mail]>

sound/soc/codecs/wm0010.c

···
 	struct list_head xfer_list;
 	struct wm0010_boot_xfer *xfer;
 	int ret;
-	struct completion done;
+	DECLARE_COMPLETION_ONSTACK(done);
 	const struct firmware *fw;
 	const struct dfw_binrec *rec;
 	const struct dfw_inforec *inforec;
···
 	wm0010->boot_failed = false;
 	if (WARN_ON(!list_empty(&xfer_list)))
 		return -EINVAL;
-	init_completion(&done);
 
 	/* First record should be INFO */
 	if (rec->command != DFW_CMD_INFO) {