qcacmn: Record reo command srng events

Add debugging infrastructure to record every event posted to reo
command ring. The infrastructure maintains the record of the last
64 events posted to the ring.

Change-Id: Id56fc352050eb664a64b0abb767f3b4a6b4c3aa3
CRs-Fixed: 2552822

hal/wifi3.0/hal_reo.c

@@ -529,8 +529,6 @@ inline int hal_reo_cmd_flush_cache(hal_ring_handle_t hal_ring_hdl,
 
 	reo_desc = hal_srng_src_get_next(hal_soc, hal_ring_hdl);
 	if (!reo_desc) {
-		QDF_TRACE(QDF_MODULE_ID_TXRX, QDF_TRACE_LEVEL_DEBUG,
-			"%s: Out of cmd ring entries", __func__);
 		hal_srng_access_end(hal_soc, hal_ring_hdl);
 		hal_srng_dump(hal_ring_handle_to_hal_srng(hal_ring_hdl));
 		return -EBUSY;