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/net/irda/irnetlink.c b/net/irda/irnetlink.c
index a37b81f..e15c40e 100644
--- a/net/irda/irnetlink.c
+++ b/net/irda/irnetlink.c
@@ -41,7 +41,7 @@
 
 	ifname = nla_data(info->attrs[IRDA_NL_ATTR_IFNAME]);
 
-	IRDA_DEBUG(5, "%s(): Looking for %s\n", __func__, ifname);
+	pr_debug("%s(): Looking for %s\n", __func__, ifname);
 
 	return dev_get_by_name(net, ifname);
 }
@@ -57,7 +57,7 @@
 
 	mode = nla_get_u32(info->attrs[IRDA_NL_ATTR_MODE]);
 
-	IRDA_DEBUG(5, "%s(): Switching to mode: %d\n", __func__, mode);
+	pr_debug("%s(): Switching to mode: %d\n", __func__, mode);
 
 	dev = ifname_to_netdev(&init_net, info);
 	if (!dev)