asoc: fix silence data during concurrent capture

Remove static definition of size and index variables, which are
unique to each capture session. Static defintion of index variable
may incorrectly copy data from wrong memory offset. This might inject
silence/clutter in data copied to audio HAL.

CRs-Fixed: 2457887
Change-Id: I7b2f48d21545655ddaa13566ab4ea87a1cbd7424
Signed-off-by: Vignesh Kulothungan <[email protected]>

asoc/msm-pcm-q6-v2.c

@@ -950,8 +950,8 @@ static int msm_pcm_capture_copy(struct snd_pcm_substream *substream,
 	int xfer;
 	char *bufptr;
 	void *data = NULL;
-	static uint32_t idx;
-	static uint32_t size;
+	uint32_t idx = 0;
+	uint32_t size = 0;
 	uint32_t offset = 0;
 	struct snd_pcm_runtime *runtime = substream->runtime;
 	struct msm_audio *prtd = substream->runtime->private_data;