Revert "asoc: check payload length against structure size"

This reverts commit 2f35e4997c3e78a83fcdc459f4dcbbbaddc85d2d.
Payload size is specified in ASM callback,
which allocates memory consequently.
The check was unnecessary and incorrect.

Change-Id: I130870148db9c31a885b86f7ea495a8e843958d8

asoc/msm-qti-pp-config.c

@@ -1238,13 +1238,6 @@ int msm_adsp_inform_mixer_ctl(struct snd_soc_pcm_runtime *rtd,
 	}
 
 	event_data = (struct msm_adsp_event_data *)payload;
-	if (event_data->payload_len < sizeof(struct msm_adsp_event_data)) {
-		pr_err("%s: event_data size of %x is less than expected.\n",
-			__func__, event_data->payload_len);
-		ret = -EINVAL;
-		goto done;
-	}
-
 	kctl->info(kctl, &kctl_info);
 
 	if (event_data->payload_len >