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/ipv6.c b/net/sctp/ipv6.c
index 7326891..95e0c8e 100644
--- a/net/sctp/ipv6.c
+++ b/net/sctp/ipv6.c
@@ -47,6 +47,8 @@
  * be incorporated into the next SCTP release.
  */
 
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
 #include <linux/module.h>
 #include <linux/errno.h>
 #include <linux/types.h>
@@ -336,7 +338,7 @@
 		memcpy(saddr, baddr, sizeof(union sctp_addr));
 		SCTP_DEBUG_PRINTK("saddr: %pI6\n", &saddr->v6.sin6_addr);
 	} else {
-		printk(KERN_ERR "%s: asoc:%p Could not find a valid source "
+		pr_err("%s: asoc:%p Could not find a valid source "
 		       "address for the dest:%pI6\n",
 		       __func__, asoc, &daddr->v6.sin6_addr);
 	}