netfilter: Convert pr_warning to pr_warn

Use the more common pr_warn.

Other miscellanea:

o Coalesce formats
o Realign arguments

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --cc net/netfilter/ipset/ip_set_core.c
Simple merge

diff --cc net/netfilter/ipset/ip_set_hash_gen.h
Simple merge

diff --cc net/netfilter/xt_connbytes.c
Simple merge

diff --cc net/netfilter/xt_hashlimit.c
Simple merge

diff --cc net/netfilter/xt_set.c
Simple merge