net: Convert printks to pr_<level>

Use a more current kernel messaging style.

Convert a printk block to print_hex_dump.
Coalesce formats, align arguments.
Use %s, __func__ instead of embedding function names.

Some messages that were prefixed with <foo>_close are
now prefixed with <foo>_fini.  Some ah4 and esp messages
are now not prefixed with "ip ".

The intent of this patch is to later add something like
  #define pr_fmt(fmt) "IPv4: " fmt.
to standardize the output messages.

Text size is trivially reduced. (x86-32 allyesconfig)

$ size net/ipv4/built-in.o*
   text	   data	    bss	    dec	    hex	filename
 887888	  31558	 249696	1169142	 11d6f6	net/ipv4/built-in.o.new
 887934	  31558	 249800	1169292	 11d78c	net/ipv4/built-in.o.old

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/ipv4/raw.c b/net/ipv4/raw.c
index ab46630..bbd604c 100644
--- a/net/ipv4/raw.c
+++ b/net/ipv4/raw.c
@@ -491,11 +491,8 @@
 		if (msg->msg_namelen < sizeof(*usin))
 			goto out;
 		if (usin->sin_family != AF_INET) {
-			static int complained;
-			if (!complained++)
-				printk(KERN_INFO "%s forgot to set AF_INET in "
-						 "raw sendmsg. Fix it!\n",
-						 current->comm);
+			pr_info_once("%s: %s forgot to set AF_INET. Fix it!\n",
+				     __func__, current->comm);
 			err = -EAFNOSUPPORT;
 			if (usin->sin_family)
 				goto out;