CIFS: Change mid_q_entry structure fields

to be protocol-unspecific and big enough to keep both CIFS
and SMB2 values.

Signed-off-by: Pavel Shilovsky <piastry@etersoft.ru>

diff --cc fs/cifs/cifs_debug.c
Simple merge

diff --cc fs/cifs/cifsglob.h
Simple merge

diff --cc fs/cifs/cifssmb.c
Simple merge

diff --cc fs/cifs/connect.c
Simple merge

diff --cc fs/cifs/misc.c
Simple merge

diff --cc fs/cifs/transport.c
Simple merge