[IPV4] net/ipv4: Use ipv4_is_<type>

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

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

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

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

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

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

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

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

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

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

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