msm: camera: Always report real time timestamp

Kernel will always report timestamp value in real time, also adding
in AV timer value if necessary.
HAL will do any necessary conversion to monotonic time.

CRs-fixed: 2054122
Change-Id: I40ff893a02090f73874da54cddf46801768231a3
Signed-off-by: Jason Lee <leejason@codeaurora.org>

drivers/media/platform/msm/camera_v2/isp/msm_isp_axi_util.c

@@ -4021,7 +4021,7 @@ void msm_isp_process_axi_irq_stream(struct vfe_device *vfe_dev,
 		msm_isp_get_avtimer_ts(ts);
 		time_stamp = &ts->vt_time;
 	} else {
-		time_stamp = &ts->buf_time;
+		time_stamp = &ts->event_time;
 	}
 
 	frame_id = vfe_dev->axi_data.

drivers/media/platform/msm/camera_v2/isp/msm_isp_util.c

@@ -208,15 +208,14 @@ void msm_isp_get_timestamp(struct msm_isp_timestamp *time_stamp,
 {
 	struct timespec ts;
 
-	do_gettimeofday(&(time_stamp->event_time));
+	get_monotonic_boottime(&ts);
+	time_stamp->event_time.tv_sec = ts.tv_sec;
+	time_stamp->event_time.tv_usec = ts.tv_nsec / 1000;
+	time_stamp->buf_time = time_stamp->event_time;
 	if (vfe_dev->vt_enable) {
 		msm_isp_get_avtimer_ts(time_stamp);
 		time_stamp->buf_time.tv_sec    = time_stamp->vt_time.tv_sec;
 		time_stamp->buf_time.tv_usec   = time_stamp->vt_time.tv_usec;
-	} else {
-		get_monotonic_boottime(&ts);
-		time_stamp->buf_time.tv_sec    = ts.tv_sec;
-		time_stamp->buf_time.tv_usec   = ts.tv_nsec/1000;
 	}
 }