qcacmn: Introduce counters per endpoint to improve HTC debuggability

To introduce counters htc_send_cnt and htc_comp_cnt per endpoint to
enhance pdev level debugging in HTC path.

Change-Id: I8d31e3a533e0f8de4c89d3609b20c148aef3a4ff

htc/htc_internal.h

@@ -140,6 +140,8 @@ typedef struct _HTC_ENDPOINT {
 	qdf_timer_t ul_poll_timer;
 	int ul_poll_timer_active;
 	int ul_outstanding_cnt;
+	uint32_t htc_send_cnt;
+	uint32_t htc_comp_cnt;
 	/* Need to call HIF to fetch rx?  (Not currently supported.) */
 	int dl_is_polled;
 	/* not currently supported */