This configuration option is not set when building the
layerscape/armv8_64b target.
Fixes: 92aa21497b2 ("kernel: build support for NFSv4 in nfsd") Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
(backported from 99e1a12fd0448bc045da7f3776e804df187ee7a2)