This patch fixes the declaration of the logger structure in ebt_log
and ebt_ulog: I forgot to remove the const option from their declaration
in the commit 
ca735b3aaa945626ba65a3e51145bfe4ecd9e222 ("netfilter:
use a linked list of loggers").
Pointed-out-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Eric Leblond <eric@inl.fr>
Signed-off-by: David S. Miller <davem@davemloft.net>
        .me             = THIS_MODULE,
 };
 
-static const struct nf_logger ebt_log_logger = {
+static struct nf_logger ebt_log_logger __read_mostly = {
        .name           = "ebt_log",
        .logfn          = &ebt_log_packet,
        .me             = THIS_MODULE,
 
        .me             = THIS_MODULE,
 };
 
-static const struct nf_logger ebt_ulog_logger = {
+static struct nf_logger ebt_ulog_logger __read_mostly = {
        .name           = "ulog",
        .logfn          = &ebt_log_packet,
        .me             = THIS_MODULE,