qcacld-3.0: Reduce excessive "info" logging

In the function __wlan_hdd_read_ll_stats_debugfs, the debug prints are
of level "info". This takes up space in the log buffers that affects the
functionality of features use by customers.

Change the logging from "info" to "debug" so as to print the same in the
driver logs instead of kernel logs.

Change-Id: I3c38f704175d1d74496fa0ccf4e27ef48d5100f6
CRs-Fixed: 2562762

core/hdd/src/wlan_hdd_debugfs_llstat.c

@@ -386,7 +386,7 @@ static ssize_t __wlan_hdd_read_ll_stats_debugfs(struct net_device *net_dev,
 
 	/* All the events are received and buffer is populated */
 	ret = hdd_debugfs_stats_update(buf, count, pos);
-	hdd_info("%zu characters written into debugfs", ret);
+	hdd_debug("%zu characters written into debugfs", ret);
 
 	hdd_exit();