libertas_tf: lower the debug level of command trace

Logging each and every command response is way too much for INFO level.
Silence this, unless CONFIG_LIBERTAS_THINFIRM_DEBUG has been enabled.
Signed-off-by: Lubomir Rintel <lkundrak@v3.sk>
Reviewed-by: Steve deRosier <derosier@cal-sierra.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

drivers/net/wireless/marvell/libertas_tf/cmd.c

@@ -737,8 +737,7 @@ int lbtf_process_rx_command(struct lbtf_private *priv)
 	respcmd = le16_to_cpu(resp->command);
 	result = le16_to_cpu(resp->result);
 
-	if (net_ratelimit())
-		pr_info("libertastf: cmd response 0x%04x, seq %d, size %d\n",
+	lbtf_deb_cmd("libertastf: cmd response 0x%04x, seq %d, size %d\n",
 		     respcmd, le16_to_cpu(resp->seqnum),
 		     le16_to_cpu(resp->size));