netfilter: log: Fix log-level processing

[e-mail] reports that iptables does not correctly
output the KERN_<level>.

$IPTABLES -A RULE_0_in -j LOG --log-level notice --log-prefix "DENY in: "

result with linux 3.6-rc5
Sep 12 06:37:29 xxxxx kernel: <5>DENY in: IN=eth0 OUT= MAC=.......

result with linux 3.5.3 and older:
Sep 9 10:43:01 xxxxx kernel: DENY in: IN=eth0 OUT= MAC......

commit 04d2c8c83d0
("printk: convert the format for KERN_<LEVEL> to a 2 byte pattern")
updated the syslog header style but did not update netfilter uses.

Do so.

Use KERN_SOH and string concatenation instead of "%c" KERN_SOH_ASCII
as suggested by Eric Dumazet.

Signed-off-by: Joe Perches <[e-mail]>
cc: [e-mail]
Signed-off-by: Pablo Neira Ayuso <[e-mail]>

net/bridge/netfilter/ebt_log.c

···
 	unsigned int bitmask;
 
 	spin_lock_bh(&ebt_log_lock);
-	printk("<%c>%s IN=%s OUT=%s MAC source = %pM MAC dest = %pM proto = 0x%04x",
+	printk(KERN_SOH "%c%s IN=%s OUT=%s MAC source = %pM MAC dest = %pM proto = 0x%04x",
 	       '0' + loginfo->u.log.level, prefix,
 	       in ? in->name : "", out ? out->name : "",
 	       eth_hdr(skb)->h_source, eth_hdr(skb)->h_dest,

net/netfilter/xt_LOG.c

···
 		  const struct nf_loginfo *loginfo,
 		  const char *prefix)
 {
-	sb_add(m, "<%d>%sIN=%s OUT=%s ", loginfo->u.log.level,
-	       prefix,
+	sb_add(m, KERN_SOH "%c%sIN=%s OUT=%s ",
+	       '0' + loginfo->u.log.level, prefix,
 	       in ? in->name : "",
 	       out ? out->name : "");
 #ifdef CONFIG_BRIDGE_NETFILTER