[SCTP]: Switch ->from_skb() to net-endian.

All instances switched, callers updated.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --cc net/sctp/input.c
Simple merge

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

diff --cc net/sctp/protocol.c
Simple merge

diff --cc net/sctp/sm_make_chunk.c
Simple merge