Use the #defines where appropriate.
Miscellanea:
Add explicit #include <linux/kernel.h> where it was not
previously used so that these #defines are a bit more
explicitly defined instead of indirectly included via:
	module.h->moduleparam.h->kernel.h
Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
  * it under the terms of the GNU General Public License version 2 as
  * published by the Free Software Foundation.
  */
+
 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
 
+#include <linux/kernel.h>
 #include <linux/module.h>
 #include <linux/spinlock.h>
 #include <linux/skbuff.h>
        .type   = NF_LOG_TYPE_LOG,
        .u = {
                .log = {
-                       .level    = 5,
+                       .level    = LOGLEVEL_NOTICE,
                        .logflags = NF_LOG_MASK,
                },
        },
 
  * it under the terms of the GNU General Public License version 2 as
  * published by the Free Software Foundation.
  */
+
 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
 
+#include <linux/kernel.h>
 #include <linux/module.h>
 #include <linux/spinlock.h>
 #include <linux/skbuff.h>
        .type   = NF_LOG_TYPE_LOG,
        .u = {
                .log = {
-                       .level    = 5,
+                       .level    = LOGLEVEL_NOTICE,
                        .logflags = NF_LOG_MASK,
                },
        },
 
  * it under the terms of the GNU General Public License version 2 as
  * published by the Free Software Foundation.
  */
+
 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
+#include <linux/kernel.h>
 #include <linux/capability.h>
 #include <linux/in.h>
 #include <linux/skbuff.h>
        .type = NF_LOG_TYPE_LOG,
        .u = {
                .log = {
-                       .level = 4,
+                       .level = LOGLEVEL_WARNING,
                        .logflags = NF_LOG_MASK,
                },
        },
 
  * it under the terms of the GNU General Public License version 2 as
  * published by the Free Software Foundation.
  */
+
 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
 
+#include <linux/kernel.h>
 #include <linux/module.h>
 #include <linux/spinlock.h>
 #include <linux/skbuff.h>
        .type   = NF_LOG_TYPE_LOG,
        .u = {
                .log = {
-                       .level    = 5,
+                       .level    = LOGLEVEL_NOTICE,
                        .logflags = NF_LOG_MASK,
                },
        },
 
  * Development of this code funded by Astaro AG (http://www.astaro.com/)
  */
 
+#include <linux/kernel.h>
 #include <linux/module.h>
 #include <linux/init.h>
 #include <linux/list.h>
        .type = NF_LOG_TYPE_LOG,
        .u = {
                .log = {
-                       .level = 4,
+                       .level = LOGLEVEL_WARNING,
                        .logflags = NF_LOG_MASK,
                },
        },
 
                        li->u.log.level =
                                ntohl(nla_get_be32(tb[NFTA_LOG_LEVEL]));
                } else {
-                       li->u.log.level = 4;
+                       li->u.log.level = LOGLEVEL_WARNING;
                }
                if (tb[NFTA_LOG_FLAGS] != NULL) {
                        li->u.log.logflags =