nfs4: Make nfs4_proc_get_lease_time available for nfs4.0

mainline inclusion
from mainline-v5.3-rc1
commit 0efb01b2
category: bugfix
bugzilla: NA
CVE: NA

--------------------------------

Compile nfs4_proc_get_lease_time, enc_get_lease_time and
dec_get_lease_time for nfs4.0. Use nfs4_sequence_done instead of
nfs41_sequence_done in nfs4_proc_get_lease_time,

Signed-off-by: Donald Buczek <buczek@molgen.mpg.de>
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>

Conflicts:
	fs/nfs/nfs4_fs.h

Signed-off-by: Zhang Xiaoxu <zhangxiaoxu5@huawei.com>
Reviewed-by: Zhang Yi <yi.zhang@huawei.com>
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>