video: driver: print buffer statistics once at every sec

- Added change to print buffer statistics like total and avg
etb, ebd, ftb, fbd counts, client set fps, actual fps,
bitrate values in 1 sec window and these stats currently
configured to print at every 1sec boundary.
- Convert meta buffer prints to low level logs.

Change-Id: I1c93eea90fbd5460eb51bbf133c513157003d51e
Signed-off-by: Govindaraj Rajagopal <grajagop@codeaurora.org>

driver/vidc/inc/msm_vidc_driver.h

@@ -15,6 +15,8 @@
 #define MSM_VIDC_SESSION_INACTIVE_THRESHOLD_MS 1000
 #define HEIC_GRID_DIMENSION 512
 
+enum msm_vidc_debugfs_event;
+
 static inline is_decode_session(struct msm_vidc_inst *inst)
 {
 	return inst->domain == MSM_VIDC_DECODER;
@@ -346,6 +348,11 @@ int msm_vidc_get_delayed_unmap(struct msm_vidc_inst *inst,
 	struct msm_vidc_map *map);
 int msm_vidc_put_delayed_unmap(struct msm_vidc_inst *inst,
 	struct msm_vidc_map *map);
+void msm_vidc_update_stats(struct msm_vidc_inst *inst,
+	struct msm_vidc_buffer *buf, enum msm_vidc_debugfs_event etype);
+void msm_vidc_stats_handler(struct work_struct *work);
+int schedule_stats_work(struct msm_vidc_inst *inst);
+int cancel_stats_work(struct msm_vidc_inst *inst);
 enum msm_vidc_buffer_type v4l2_type_to_driver(u32 type,
 	const char *func);
 int msm_vidc_queue_buffer_single(struct msm_vidc_inst *inst,