ipv4: fix checkpatch errors

Fix checkpatch errors of the following type:
	* ERROR: "foo * bar" should be "foo *bar"
	* ERROR: "(foo*)" should be "(foo *)"

Signed-off-by: Daniel Baluta <dbaluta@ixiacom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --cc net/ipv4/af_inet.c
Simple merge

diff --cc net/ipv4/ah4.c
Simple merge

diff --cc net/ipv4/igmp.c
Simple merge

diff --cc net/ipv4/inet_hashtables.c
Simple merge

diff --cc net/ipv4/ip_forward.c
Simple merge

diff --cc net/ipv4/ip_gre.c
Simple merge

diff --cc net/ipv4/ip_options.c
Simple merge

diff --cc net/ipv4/ip_sockglue.c
Simple merge

diff --cc net/ipv4/ipip.c
Simple merge

diff --cc net/ipv4/ping.c
Simple merge

diff --cc net/ipv4/raw.c
Simple merge

diff --cc net/ipv4/route.c
Simple merge

diff --cc net/ipv4/tcp_probe.c
Simple merge

diff --cc net/ipv4/udp.c
Simple merge

diff --cc net/ipv4/udp_impl.h
Simple merge

diff --cc net/ipv4/xfrm4_policy.c
Simple merge