net/sctp: Use pr_fmt and pr_<level>

Change SCTP_DEBUG_PRINTK and SCTP_DEBUG_PRINTK_IPADDR to
use do { print } while (0) guards.
Add SCTP_DEBUG_PRINTK_CONT to fix errors in log when
lines were continued.
Add #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
Add a missing newline in "Failed bind hash alloc"

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/sctp/objcnt.c b/net/sctp/objcnt.c
index f73ec0e..8ef8e7d 100644
--- a/net/sctp/objcnt.c
+++ b/net/sctp/objcnt.c
@@ -38,6 +38,8 @@
  * be incorporated into the next SCTP release.
  */
 
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
 #include <linux/kernel.h>
 #include <net/sctp/sctp.h>
 
@@ -134,8 +136,7 @@
 	ent = proc_create("sctp_dbg_objcnt", 0,
 			  proc_net_sctp, &sctp_objcnt_ops);
 	if (!ent)
-		printk(KERN_WARNING
-			"sctp_dbg_objcnt: Unable to create /proc entry.\n");
+		pr_warn("sctp_dbg_objcnt: Unable to create /proc entry.\n");
 }
 
 /* Cleanup the objcount entry in the proc filesystem.  */