iscsit: proper endianess conversions

Make sure all on the wire types are use as big endian and big endian only so
that sparse can verify all the conversions are done right.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>

diff --cc drivers/target/iscsi/iscsi_target.c
Simple merge

diff --cc drivers/target/iscsi/iscsi_target_core.h
Simple merge

diff --cc drivers/target/iscsi/iscsi_target_erl0.c
Simple merge

diff --cc drivers/target/iscsi/iscsi_target_erl2.c
Simple merge

diff --cc drivers/target/iscsi/iscsi_target_erl2.h
Simple merge

diff --cc drivers/target/iscsi/iscsi_target_login.c
Simple merge

diff --cc drivers/target/iscsi/iscsi_target_nego.c
Simple merge

diff --cc drivers/target/iscsi/iscsi_target_tmr.c
Simple merge

diff --cc drivers/target/iscsi/iscsi_target_util.c
Simple merge

diff --cc drivers/target/iscsi/iscsi_target_util.h
Simple merge