inet: frag: remove hash size assumptions from callers

hide actual hash size from individual users: The _find
function will now fold the given hash value into the required range.

Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --cc net/ieee802154/reassembly.c
Simple merge

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

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

diff --cc net/ipv6/netfilter/nf_conntrack_reasm.c
Simple merge

diff --cc net/ipv6/reassembly.c
Simple merge