irda: Convert IRDA_DEBUG to pr_debug

Use the normal kernel debugging mechanism which also
enables dynamic_debug at the same time.

Other miscellanea:

o Remove sysctl for irda_debug
o Remove function tracing like uses (use ftrace instead)
o Coalesce formats
o Realign arguments
o Remove unnecessary OOM messages

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/irda/mcs7780.c b/drivers/net/irda/mcs7780.c
index 6cbd29d..e4d678f 100644
--- a/drivers/net/irda/mcs7780.c
+++ b/drivers/net/irda/mcs7780.c
@@ -894,7 +894,7 @@
 	if (!ndev)
 		goto error1;
 
-	IRDA_DEBUG(1, "MCS7780 USB-IrDA bridge found at %d.\n", udev->devnum);
+	pr_debug("MCS7780 USB-IrDA bridge found at %d.\n", udev->devnum);
 
 	SET_NETDEV_DEV(ndev, &intf->dev);
 
@@ -942,8 +942,8 @@
 	if (ret != 0)
 		goto error2;
 
-	IRDA_DEBUG(1, "IrDA: Registered MosChip MCS7780 device as %s\n",
-		   ndev->name);
+	pr_debug("IrDA: Registered MosChip MCS7780 device as %s\n",
+		 ndev->name);
 
 	mcs->transceiver_type = transceiver_type;
 	mcs->sir_tweak = sir_tweak;
@@ -973,7 +973,7 @@
 	free_netdev(mcs->netdev);
 
 	usb_set_intfdata(intf, NULL);
-	IRDA_DEBUG(0, "MCS7780 now disconnected.\n");
+	pr_debug("MCS7780 now disconnected.\n");
 }
 
 module_usb_driver(mcs_driver);