asoc: update log level to avoid execessive logging

Excessive logging causes throttling during bootup.
Update log level from error to debug in get functions to
avoid excessive logging.

CRs-Fixed: 2321589
Change-Id: If2a23144adf76cdd9bb2d9048a967b63186d7f6e
Signed-off-by: Vignesh Kulothungan <vigneshk@codeaurora.org>

asoc/msm-pcm-loopback-v2.c

@@ -1,4 +1,4 @@
-/* Copyright (c) 2013-2017, The Linux Foundation. All rights reserved.
+/* Copyright (c) 2013-2018, The Linux Foundation. All rights reserved.
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License version 2 and
@@ -517,7 +517,7 @@ static int msm_pcm_volume_ctl_get(struct snd_kcontrol *kcontrol,
 
 	pr_debug("%s\n", __func__);
 	if ((!substream) || (!substream->runtime)) {
-		pr_err("%s substream or runtime not found\n", __func__);
+		pr_debug("%s substream or runtime not found\n", __func__);
 		rc = -ENODEV;
 		goto exit;
 	}